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3680489157 = 31226829719
BaseRepresentation
bin1101101101011111…
…1100111011000101
3100111111111012222020
43123113330323011
530014201123112
61405113353353
7160130433042
oct33327747305
910444435866
103680489157
1116195a3a84
12868708859
13468682047
1426cb421c9
151681b048c
hexdb5fcec5

3680489157 has 4 divisors (see below), whose sum is σ = 4907318880. Its totient is φ = 2453659436.

The previous prime is 3680489149. The next prime is 3680489173. The reversal of 3680489157 is 7519840863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7519840863 = 32506613621.

It is a cyclic number.

It is not a de Polignac number, because 3680489157 - 23 = 3680489149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3680489177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 613414857 + ... + 613414862.

It is an arithmetic number, because the mean of its divisors is an integer number (1226829720).

Almost surely, 23680489157 is an apocalyptic number.

It is an amenable number.

3680489157 is a deficient number, since it is larger than the sum of its proper divisors (1226829723).

3680489157 is a wasteful number, since it uses less digits than its factorization.

3680489157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226829722.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 3680489157 is about 60667.0351756207. The cubic root of 3680489157 is about 1543.9569289902.

The spelling of 3680489157 in words is "three billion, six hundred eighty million, four hundred eighty-nine thousand, one hundred fifty-seven".

Divisors: 1 3 1226829719 3680489157