1612643044 has 6 divisors (see below), whose sum is σ = 2822125334. Its totient is φ = 806321520.

The previous prime is 1612643027. The next prime is 1612643057. The reversal of 1612643044 is 4403462161.

It can be written as a sum of positive squares in only one way, i.e., 1596961444 + 15681600 = 39962^2 + 3960^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1612642997 and 1612643015.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201580377 + ... + 201580384.

Almost surely, 2^1612643044 is an apocalyptic number.

It is an amenable number.

1612643044 is a deficient number, since it is larger than the sum of its proper divisors (1209482290).

1612643044 is a wasteful number, since it uses less digits than its factorization.

1612643044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403160765 (or 403160763 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1612643044 is about 40157.7270771143. The cubic root of 1612643044 is about 1172.6797233151.

The spelling of 1612643044 in words is "one billion, six hundred twelve million, six hundred forty-three thousand, forty-four".