151404381 has 12 divisors (see below), whose sum is σ = 218804352. Its totient is φ = 100885896.

The previous prime is 151404347. The next prime is 151404427. The reversal of 151404381 is 183404151.

It is a happy number.

It is not a de Polignac number, because 151404381 - 2¹⁸ = 151142237 is a prime.

It is a super-2 number, since 2×151404381² = 45846573171986322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151404311) 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, 27220 + ... + 32306.

It is an arithmetic number, because the mean of its divisors is an integer number (18233696).

Almost surely, 2^151404381 is an apocalyptic number.

It is an amenable number.

151404381 is a deficient number, since it is larger than the sum of its proper divisors (67399971).

151404381 is a wasteful number, since it uses less digits than its factorization.

151404381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400 (or 8397 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 151404381 is about 12304.6487556533. The cubic root of 151404381 is about 532.9823335891.

The spelling of 151404381 in words is "one hundred fifty-one million, four hundred four thousand, three hundred eighty-one".