1357879890 has 32 divisors (see below), whose sum is σ = 3261779136. Its totient is φ = 361782720.

The previous prime is 1357879889. The next prime is 1357879891. The reversal of 1357879890 is 989787531.

It is an interprime number because it is at equal distance from previous prime (1357879889) and next prime (1357879891).

It is a self number, because there is not a number n which added to its sum of digits gives 1357879890.

It is not an unprimeable number, because it can be changed into a prime (1357879891) 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, 15804 + ... + 54456.

It is an arithmetic number, because the mean of its divisors is an integer number (101930598).

Almost surely, 2^1357879890 is an apocalyptic number.

1357879890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1357879890 is an abundant number, since it is smaller than the sum of its proper divisors (1903899246).

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

1357879890 is a wasteful number, since it uses less digits than its factorization.

1357879890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39834.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The square root of 1357879890 is about 36849.4218407833. The cubic root of 1357879890 is about 1107.3556320811.

The spelling of 1357879890 in words is "one billion, three hundred fifty-seven million, eight hundred seventy-nine thousand, eight hundred ninety".