151243638 has 32 divisors (see below), whose sum is σ = 372293376. Its totient is φ = 39888288.

The previous prime is 151243633. The next prime is 151243639. The reversal of 151243638 is 836342151.

151243638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 151243599 and 151243608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151243633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137956 + ... + 139047.

It is an arithmetic number, because the mean of its divisors is an integer number (11634168).

Almost surely, 2^151243638 is an apocalyptic number.

151243638 is an abundant number, since it is smaller than the sum of its proper divisors (221049738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151243638 is a wasteful number, since it uses less digits than its factorization.

151243638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277028.

The product of its digits is 17280, while the sum is 33.

The square root of 151243638 is about 12298.1152214476. The cubic root of 151243638 is about 532.7936479078.

Adding to 151243638 its reverse (836342151), we get a palindrome (987585789).

It can be divided in two parts, 1512 and 43638, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 151243638 in words is "one hundred fifty-one million, two hundred forty-three thousand, six hundred thirty-eight".