1372772645 has 16 divisors (see below), whose sum is σ = 1659590400. Its totient is φ = 1090070784.

The previous prime is 1372772587. The next prime is 1372772669. The reversal of 1372772645 is 5462772731.

It is a cyclic number.

It is not a de Polignac number, because 1372772645 - 2²⁰ = 1371724069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1372772596 and 1372772605.

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, 483149 + ... + 485981.

It is an arithmetic number, because the mean of its divisors is an integer number (103724400).

Almost surely, 2^1372772645 is an apocalyptic number.

It is an amenable number.

1372772645 is a deficient number, since it is larger than the sum of its proper divisors (286817755).

1372772645 is a wasteful number, since it uses less digits than its factorization.

1372772645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524.

The product of its digits is 493920, while the sum is 44.

The square root of 1372772645 is about 37050.9466140880. The cubic root of 1372772645 is about 1111.3892852422.

The spelling of 1372772645 in words is "one billion, three hundred seventy-two million, seven hundred seventy-two thousand, six hundred forty-five".