374156381 has 2 divisors, whose sum is σ = 374156382. Its totient is φ = 374156380.

The previous prime is 374156291. The next prime is 374156389. The reversal of 374156381 is 183651473.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208802500 + 165353881 = 14450^2 + 12859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-374156381 is a prime.

It is a super-2 number, since 2×374156381² = 279985994886034322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (374156389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187078190 + 187078191.

It is an arithmetic number, because the mean of its divisors is an integer number (187078191).

Almost surely, 2^374156381 is an apocalyptic number.

It is an amenable number.

374156381 is a deficient number, since it is larger than the sum of its proper divisors (1).

374156381 is an equidigital number, since it uses as much as digits as its factorization.

374156381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 374156381 is about 19343.1223177645. The cubic root of 374156381 is about 720.5836195215.

The spelling of 374156381 in words is "three hundred seventy-four million, one hundred fifty-six thousand, three hundred eighty-one".