3972791507 has 2 divisors, whose sum is σ = 3972791508. Its totient is φ = 3972791506.

The previous prime is 3972791497. The next prime is 3972791527. The reversal of 3972791507 is 7051972793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3972791507 - 2¹² = 3972787411 is a prime.

It is not a weakly prime, because it can be changed into another prime (3972791527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986395753 + 1986395754.

It is an arithmetic number, because the mean of its divisors is an integer number (1986395754).

Almost surely, 2^3972791507 is an apocalyptic number.

3972791507 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972791507 is an equidigital number, since it uses as much as digits as its factorization.

3972791507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 3972791507 is about 63030.0841424157. The cubic root of 3972791507 is about 1583.7936276463.

The spelling of 3972791507 in words is "three billion, nine hundred seventy-two million, seven hundred ninety-one thousand, five hundred seven".