61915194 has 24 divisors (see below), whose sum is σ = 146345472. Its totient is φ = 18762120.

The previous prime is 61915181. The next prime is 61915219. The reversal of 61915194 is 49151916.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156154 + ... + 156549.

It is an arithmetic number, because the mean of its divisors is an integer number (6097728).

Almost surely, 2^61915194 is an apocalyptic number.

61915194 is an abundant number, since it is smaller than the sum of its proper divisors (84430278).

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

61915194 is a wasteful number, since it uses less digits than its factorization.

61915194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312722 (or 312719 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 61915194 is about 7868.6208448495. The cubic root of 61915194 is about 395.6086200476.

The spelling of 61915194 in words is "sixty-one million, nine hundred fifteen thousand, one hundred ninety-four".