1334807640 has 64 divisors (see below), whose sum is σ = 4449362400. Its totient is φ = 355948416.

The previous prime is 1334807629. The next prime is 1334807647. The reversal of 1334807640 is 467084331.

1334807640 is a `hidden beast` number, since 1 + 3 + 3 + 4 + 8 + 0 + 7 + 640 = 666.

It is a super-2 number, since 2×1334807640² = 3563422871604739200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1334807595 and 1334807604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1334807647) 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, 616887 + ... + 619046.

Almost surely, 2^1334807640 is an apocalyptic number.

1334807640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1334807640 is an abundant number, since it is smaller than the sum of its proper divisors (3114554760).

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

1334807640 is a wasteful number, since it uses less digits than its factorization.

1334807640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235953 (or 1235943 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 1334807640 is about 36535.0193649873. The cubic root of 1334807640 is about 1101.0479379821.

The spelling of 1334807640 in words is "one billion, three hundred thirty-four million, eight hundred seven thousand, six hundred forty".