612401138 has 4 divisors (see below), whose sum is σ = 918601710. Its totient is φ = 306200568.

The previous prime is 612401113. The next prime is 612401147. The reversal of 612401138 is 831104216.

612401138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 579990889 + 32410249 = 24083^2 + 5693^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153100283 + ... + 153100286.

Almost surely, 2^612401138 is an apocalyptic number.

612401138 is a deficient number, since it is larger than the sum of its proper divisors (306200572).

612401138 is a wasteful number, since it uses less digits than its factorization.

612401138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306200571.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 612401138 is about 24746.7399469102. The cubic root of 612401138 is about 849.2039319527.

The spelling of 612401138 in words is "six hundred twelve million, four hundred one thousand, one hundred thirty-eight".