3129782007 has 12 divisors (see below), whose sum is σ = 4586898680. Its totient is φ = 1896837360.

The previous prime is 3129781987. The next prime is 3129782057. The reversal of 3129782007 is 7002879213.

It is not a de Polignac number, because 3129782007 - 2⁸ = 3129781751 is a prime.

It is a super-2 number, since 2×3129782007² = 19591070822681896098, 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 (3129782057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4310632 + ... + 4311357.

Almost surely, 2^3129782007 is an apocalyptic number.

3129782007 is a deficient number, since it is larger than the sum of its proper divisors (1457116673).

3129782007 is a wasteful number, since it uses less digits than its factorization.

3129782007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8622014 (or 8622003 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 3129782007 is about 55944.4546581697. The cubic root of 3129782007 is about 1462.7542316161.

The spelling of 3129782007 in words is "three billion, one hundred twenty-nine million, seven hundred eighty-two thousand, seven".