3951285157 has 2 divisors, whose sum is σ = 3951285158. Its totient is φ = 3951285156.

The previous prime is 3951285137. The next prime is 3951285181. The reversal of 3951285157 is 7515821593.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3098703556 + 852581601 = 55666^2 + 29199^2 .

It is a cyclic number.

It is not a de Polignac number, because 3951285157 - 2³¹ = 1803801509 is a prime.

It is a super-2 number, since 2×3951285157² = 31225308783857029298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3951285127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975642578 + 1975642579.

It is an arithmetic number, because the mean of its divisors is an integer number (1975642579).

Almost surely, 2^3951285157 is an apocalyptic number.

It is an amenable number.

3951285157 is a deficient number, since it is larger than the sum of its proper divisors (1).

3951285157 is an equidigital number, since it uses as much as digits as its factorization.

3951285157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 46.

The square root of 3951285157 is about 62859.2487785210. The cubic root of 3951285157 is about 1580.9305468869.

The spelling of 3951285157 in words is "three billion, nine hundred fifty-one million, two hundred eighty-five thousand, one hundred fifty-seven".