1397654867 has 16 divisors (see below), whose sum is σ = 1619352000. Its totient is φ = 1181558400.

The previous prime is 1397654857. The next prime is 1397654873. The reversal of 1397654867 is 7684567931.

It is a cyclic number.

It is not a de Polignac number, because 1397654867 - 2⁶ = 1397654803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1397654857) 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, 186509 + ... + 193857.

It is an arithmetic number, because the mean of its divisors is an integer number (101209500).

Almost surely, 2^1397654867 is an apocalyptic number.

1397654867 is a deficient number, since it is larger than the sum of its proper divisors (221697133).

1397654867 is a wasteful number, since it uses less digits than its factorization.

1397654867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726.

The product of its digits is 7620480, while the sum is 56.

The square root of 1397654867 is about 37385.2225752369. Note that the first 3 decimals coincide. The cubic root of 1397654867 is about 1118.0639562300.

The spelling of 1397654867 in words is "one billion, three hundred ninety-seven million, six hundred fifty-four thousand, eight hundred sixty-seven".