1391699148 has 24 divisors (see below), whose sum is σ = 3711197952. Its totient is φ = 397628304.

The previous prime is 1391699131. The next prime is 1391699149. The reversal of 1391699148 is 8419961931.

It is a self number, because there is not a number n which added to its sum of digits gives 1391699148.

It is not an unprimeable number, because it can be changed into a prime (1391699149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8283840 + ... + 8284007.

It is an arithmetic number, because the mean of its divisors is an integer number (154633248).

Almost surely, 2^1391699148 is an apocalyptic number.

It is an amenable number.

1391699148 is an abundant number, since it is smaller than the sum of its proper divisors (2319498804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1391699148 is a wasteful number, since it uses less digits than its factorization.

1391699148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16567861 (or 16567859 counting only the distinct ones).

The product of its digits is 419904, while the sum is 51.

The square root of 1391699148 is about 37305.4841544779. The cubic root of 1391699148 is about 1116.4735885180.

The spelling of 1391699148 in words is "one billion, three hundred ninety-one million, six hundred ninety-nine thousand, one hundred forty-eight".