612938144 has 48 divisors (see below), whose sum is σ = 1485203328. Its totient is φ = 242479872.

The previous prime is 612938141. The next prime is 612938147. The reversal of 612938144 is 441839216.

It is an interprime number because it is at equal distance from previous prime (612938141) and next prime (612938147).

It is a junction number, because it is equal to n+sod(n) for n = 612938098 and 612938107.

It is not an unprimeable number, because it can be changed into a prime (612938141) 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, 102332 + ... + 108155.

It is an arithmetic number, because the mean of its divisors is an integer number (30941736).

Almost surely, 2^612938144 is an apocalyptic number.

It is an amenable number.

612938144 is an abundant number, since it is smaller than the sum of its proper divisors (872265184).

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

612938144 is a wasteful number, since it uses less digits than its factorization.

612938144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210517 (or 210509 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 612938144 is about 24757.5876046112. The cubic root of 612938144 is about 849.4520777886.

The spelling of 612938144 in words is "six hundred twelve million, nine hundred thirty-eight thousand, one hundred forty-four".