1357709478 has 32 divisors (see below), whose sum is σ = 2739267072. Its totient is φ = 448610400.

The previous prime is 1357709461. The next prime is 1357709491. The reversal of 1357709478 is 8749077531.

It is a self number, because there is not a number n which added to its sum of digits gives 1357709478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 419908 + ... + 423128.

It is an arithmetic number, because the mean of its divisors is an integer number (85602096).

Almost surely, 2^1357709478 is an apocalyptic number.

1357709478 is an abundant number, since it is smaller than the sum of its proper divisors (1381557594).

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

1357709478 is a wasteful number, since it uses less digits than its factorization.

1357709478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3820.

The product of its (nonzero) digits is 1481760, while the sum is 51.

The square root of 1357709478 is about 36847.1094931475. The cubic root of 1357709478 is about 1107.3093062894.

The spelling of 1357709478 in words is "one billion, three hundred fifty-seven million, seven hundred nine thousand, four hundred seventy-eight".