1396556945 has 8 divisors (see below), whose sum is σ = 1915278144. Its totient is φ = 957639024.

The previous prime is 1396556933. The next prime is 1396556957. The reversal of 1396556945 is 5496556931.

It is an interprime number because it is at equal distance from previous prime (1396556933) and next prime (1396556957).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1396556945 - 2⁴ = 1396556929 is a prime.

It is a Duffinian number.

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, 19950779 + ... + 19950848.

It is an arithmetic number, because the mean of its divisors is an integer number (239409768).

Almost surely, 2^1396556945 is an apocalyptic number.

It is an amenable number.

1396556945 is a deficient number, since it is larger than the sum of its proper divisors (518721199).

1396556945 is an equidigital number, since it uses as much as digits as its factorization.

1396556945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39901639.

The product of its digits is 4374000, while the sum is 53.

The square root of 1396556945 is about 37370.5357869004. The cubic root of 1396556945 is about 1117.7711160313.

The spelling of 1396556945 in words is "one billion, three hundred ninety-six million, five hundred fifty-six thousand, nine hundred forty-five".