1372920549 has 32 divisors (see below), whose sum is σ = 2457821184. Its totient is φ = 658342080.

The previous prime is 1372920481. The next prime is 1372920551. The reversal of 1372920549 is 9450292731.

It is not a de Polignac number, because 1372920549 - 2¹² = 1372916453 is a prime.

It is a super-2 number, since 2×1372920549² = 3769821667732922802, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1372920549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372920559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225589 + ... + 231594.

It is an arithmetic number, because the mean of its divisors is an integer number (76806912).

Almost surely, 2^1372920549 is an apocalyptic number.

It is an amenable number.

1372920549 is a deficient number, since it is larger than the sum of its proper divisors (1084900635).

1372920549 is a wasteful number, since it uses less digits than its factorization.

1372920549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457217.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1372920549 is about 37052.9425147315. The cubic root of 1372920549 is about 1111.4291979008.

The spelling of 1372920549 in words is "one billion, three hundred seventy-two million, nine hundred twenty thousand, five hundred forty-nine".