612145192 has 32 divisors (see below), whose sum is σ = 1214373600. Its totient is φ = 288477504.

The previous prime is 612145151. The next prime is 612145201. The reversal of 612145192 is 291541216.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19723 + ... + 40165.

It is an arithmetic number, because the mean of its divisors is an integer number (37949175).

Almost surely, 2^612145192 is an apocalyptic number.

It is an amenable number.

612145192 is a deficient number, since it is larger than the sum of its proper divisors (602228408).

612145192 is a wasteful number, since it uses less digits than its factorization.

612145192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20665 (or 20661 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 612145192 is about 24741.5680990514. The cubic root of 612145192 is about 849.0856104676.

The spelling of 612145192 in words is "six hundred twelve million, one hundred forty-five thousand, one hundred ninety-two".