1351379865 has 32 divisors (see below), whose sum is σ = 2372944896. Its totient is φ = 651277760.

The previous prime is 1351379857. The next prime is 1351379891. The reversal of 1351379865 is 5689731531.

It is not a de Polignac number, because 1351379865 - 2³ = 1351379857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3034 + ... + 52076.

It is an arithmetic number, because the mean of its divisors is an integer number (74154528).

Almost surely, 2^1351379865 is an apocalyptic number.

1351379865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1351379865 is a deficient number, since it is larger than the sum of its proper divisors (1021565031).

1351379865 is a wasteful number, since it uses less digits than its factorization.

1351379865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49229.

The product of its digits is 680400, while the sum is 48.

The square root of 1351379865 is about 36761.1189301958. The cubic root of 1351379865 is about 1105.5858744167.

The spelling of 1351379865 in words is "one billion, three hundred fifty-one million, three hundred seventy-nine thousand, eight hundred sixty-five".