151697438 has 4 divisors (see below), whose sum is σ = 227546160. Its totient is φ = 75848718.

The previous prime is 151697419. The next prime is 151697449. The reversal of 151697438 is 834796151.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×151697438² = 46024225391527688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37924358 + ... + 37924361.

It is an arithmetic number, because the mean of its divisors is an integer number (56886540).

Almost surely, 2^151697438 is an apocalyptic number.

151697438 is a deficient number, since it is larger than the sum of its proper divisors (75848722).

151697438 is an equidigital number, since it uses as much as digits as its factorization.

151697438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75848721.

The product of its digits is 181440, while the sum is 44.

The square root of 151697438 is about 12316.5513842147. The cubic root of 151697438 is about 533.3259906107.

The spelling of 151697438 in words is "one hundred fifty-one million, six hundred ninety-seven thousand, four hundred thirty-eight".