1396581027 has 16 divisors (see below), whose sum is σ = 1878761472. Its totient is φ = 922743360.

The previous prime is 1396581007. The next prime is 1396581029. The reversal of 1396581027 is 7201856931.

It is not a de Polignac number, because 1396581027 - 2⁸ = 1396580771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1396581027.

It is not an unprimeable number, because it can be changed into a prime (1396581029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611127 + ... + 613407.

It is an arithmetic number, because the mean of its divisors is an integer number (117422592).

Almost surely, 2^1396581027 is an apocalyptic number.

1396581027 is a deficient number, since it is larger than the sum of its proper divisors (482180445).

1396581027 is a wasteful number, since it uses less digits than its factorization.

1396581027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1396581027 is about 37370.8579912209. The cubic root of 1396581027 is about 1117.7775408820. Note that the first 3 decimals are identical.

The spelling of 1396581027 in words is "one billion, three hundred ninety-six million, five hundred eighty-one thousand, twenty-seven".