151540138 has 16 divisors (see below), whose sum is σ = 235876680. Its totient is φ = 72930816.

The previous prime is 151540133. The next prime is 151540139. The reversal of 151540138 is 831045151.

It can be written as a sum of positive squares in 4 ways, for example, as 148522969 + 3017169 = 12187^2 + 1737^2 .

It is not an unprimeable number, because it can be changed into a prime (151540133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15670 + ... + 23422.

Almost surely, 2^151540138 is an apocalyptic number.

151540138 is a deficient number, since it is larger than the sum of its proper divisors (84336542).

151540138 is a wasteful number, since it uses less digits than its factorization.

151540138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8121.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 151540138 is about 12310.1640119050. The cubic root of 151540138 is about 533.1415858443.

Adding to 151540138 its reverse (831045151), we get a palindrome (982585289).

The spelling of 151540138 in words is "one hundred fifty-one million, five hundred forty thousand, one hundred thirty-eight".