1427699137 has 4 divisors (see below), whose sum is σ = 1431012096. Its totient is φ = 1424386180.

The previous prime is 1427699093. The next prime is 1427699149. The reversal of 1427699137 is 7319967241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1427699137 - 2¹⁵ = 1427666369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1427699237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655833 + ... + 1656694.

It is an arithmetic number, because the mean of its divisors is an integer number (357753024).

Almost surely, 2^1427699137 is an apocalyptic number.

It is an amenable number.

1427699137 is a deficient number, since it is larger than the sum of its proper divisors (3312959).

1427699137 is an equidigital number, since it uses as much as digits as its factorization.

1427699137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312958.

The product of its digits is 571536, while the sum is 49.

The square root of 1427699137 is about 37784.9062060501. The cubic root of 1427699137 is about 1126.0186032469.

The spelling of 1427699137 in words is "one billion, four hundred twenty-seven million, six hundred ninety-nine thousand, one hundred thirty-seven".