951780138 has 16 divisors (see below), whose sum is σ = 1907474880. Its totient is φ = 316607616.

The previous prime is 951780131. The next prime is 951780149. The reversal of 951780138 is 831087159.

It is a self number, because there is not a number n which added to its sum of digits gives 951780138.

It is not an unprimeable number, because it can be changed into a prime (951780131) 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, 159943 + ... + 165786.

It is an arithmetic number, because the mean of its divisors is an integer number (119217180).

Almost surely, 2^951780138 is an apocalyptic number.

951780138 is an abundant number, since it is smaller than the sum of its proper divisors (955694742).

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

951780138 is a wasteful number, since it uses less digits than its factorization.

951780138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326221.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 951780138 is about 30850.9341511728. The cubic root of 951780138 is about 983.6612105384.

The spelling of 951780138 in words is "nine hundred fifty-one million, seven hundred eighty thousand, one hundred thirty-eight".