151478639 has 4 divisors (see below), whose sum is σ = 163130856. Its totient is φ = 139826424.

The previous prime is 151478633. The next prime is 151478651. The reversal of 151478639 is 936874151.

151478639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936874151 = 37 ⋅25320923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151478639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 151478639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151478633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5826089 + ... + 5826114.

It is an arithmetic number, because the mean of its divisors is an integer number (40782714).

Almost surely, 2^151478639 is an apocalyptic number.

151478639 is a deficient number, since it is larger than the sum of its proper divisors (11652217).

151478639 is a wasteful number, since it uses less digits than its factorization.

151478639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11652216.

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

The square root of 151478639 is about 12307.6658631927. The cubic root of 151478639 is about 533.0694550957.

The spelling of 151478639 in words is "one hundred fifty-one million, four hundred seventy-eight thousand, six hundred thirty-nine".