2257671989 has 8 divisors (see below), whose sum is σ = 2298375000. Its totient is φ = 2217309952.

The previous prime is 2257671967. The next prime is 2257672007. The reversal of 2257671989 is 9891767522.

It can be written as a sum of positive squares in 4 ways, for example, as 121660900 + 2136011089 = 11030^2 + 46217^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2257671989 is a prime.

It is a super-2 number, since 2×2257671989² = 10194165619830432242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257671919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71864 + ... + 98385.

It is an arithmetic number, because the mean of its divisors is an integer number (287296875).

Almost surely, 2^2257671989 is an apocalyptic number.

It is an amenable number.

2257671989 is a deficient number, since it is larger than the sum of its proper divisors (40703011).

2257671989 is a wasteful number, since it uses less digits than its factorization.

2257671989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170487.

The product of its digits is 3810240, while the sum is 56.

The square root of 2257671989 is about 47514.9659475833. The cubic root of 2257671989 is about 1311.8583630083.

The spelling of 2257671989 in words is "two billion, two hundred fifty-seven million, six hundred seventy-one thousand, nine hundred eighty-nine".