1357905780 has 144 divisors (see below), whose sum is σ = 5135405184. Its totient is φ = 282159360.

The previous prime is 1357905749. The next prime is 1357905793. The reversal of 1357905780 is 875097531.

1357905780 is a `hidden beast` number, since 1 + 3 + 5 + 79 + 0 + 578 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35127 + ... + 62846.

It is an arithmetic number, because the mean of its divisors is an integer number (35662536).

Almost surely, 2^1357905780 is an apocalyptic number.

1357905780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1357905780 is an abundant number, since it is smaller than the sum of its proper divisors (3777499404).

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

1357905780 is a wasteful number, since it uses less digits than its factorization.

1357905780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98006 (or 98001 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The square root of 1357905780 is about 36849.7731336300. The cubic root of 1357905780 is about 1107.3626698304.

The spelling of 1357905780 in words is "one billion, three hundred fifty-seven million, nine hundred five thousand, seven hundred eighty".