3149566641 has 27 divisors (see below), whose sum is σ = 4929671019. Its totient is φ = 1936847952.

The previous prime is 3149566639. The next prime is 3149566649. The reversal of 3149566641 is 1466659413.

The square root of 3149566641 is 56121.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 465912225 + 2683654416 = 21585^2 + 51804^2 .

It is not a de Polignac number, because 3149566641 - 2¹ = 3149566639 is a prime.

It is a super-2 number, since 2×3149566641² = 19839540052200045762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3149566649) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2188000 + ... + 2189438.

Almost surely, 2^3149566641 is an apocalyptic number.

3149566641 is the 56121-st square number.

3149566641 is the 28061-st centered octagonal number.

It is an amenable number.

3149566641 is a deficient number, since it is larger than the sum of its proper divisors (1780104378).

3149566641 is an equidigital number, since it uses as much as digits as its factorization.

3149566641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910 (or 1455 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The cubic root of 3149566641 is about 1465.8299825415.

The spelling of 3149566641 in words is "three billion, one hundred forty-nine million, five hundred sixty-six thousand, six hundred forty-one".