61918230 has 32 divisors (see below), whose sum is σ = 162114048. Its totient is φ = 15010400.

The previous prime is 61918229. The next prime is 61918243. The reversal of 61918230 is 3281916.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93486 + ... + 94145.

It is an arithmetic number, because the mean of its divisors is an integer number (5066064).

Almost surely, 2^61918230 is an apocalyptic number.

61918230 is an abundant number, since it is smaller than the sum of its proper divisors (100195818).

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

61918230 is a wasteful number, since it uses less digits than its factorization.

61918230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187652.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 61918230 is about 7868.8137606630. The cubic root of 61918230 is about 395.6150861403.

The spelling of 61918230 in words is "sixty-one million, nine hundred eighteen thousand, two hundred thirty".