1648929957 has 8 divisors (see below), whose sum is σ = 2199262560. Its totient is φ = 1098942000.

The previous prime is 1648929941. The next prime is 1648929983. The reversal of 1648929957 is 7599298461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1648929957 - 2⁴ = 1648929941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1648929957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648929157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74782 + ... + 94287.

It is an arithmetic number, because the mean of its divisors is an integer number (274907820).

Almost surely, 2^1648929957 is an apocalyptic number.

It is an amenable number.

1648929957 is a deficient number, since it is larger than the sum of its proper divisors (550332603).

1648929957 is a wasteful number, since it uses less digits than its factorization.

1648929957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172323.

The product of its digits is 9797760, while the sum is 60.

The square root of 1648929957 is about 40607.0185682229. The cubic root of 1648929957 is about 1181.4102541855.

The spelling of 1648929957 in words is "one billion, six hundred forty-eight million, nine hundred twenty-nine thousand, nine hundred fifty-seven".