1357998390 has 96 divisors (see below), whose sum is σ = 4042598976. Its totient is φ = 309830400.

The previous prime is 1357998379. The next prime is 1357998391. The reversal of 1357998390 is 938997531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357998391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 409740 + ... + 413040.

It is an arithmetic number, because the mean of its divisors is an integer number (42110406).

Almost surely, 2^1357998390 is an apocalyptic number.

1357998390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1357998390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021299488).

1357998390 is an abundant number, since it is smaller than the sum of its proper divisors (2684600586).

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

1357998390 is a wasteful number, since it uses less digits than its factorization.

1357998390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974 (or 3971 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 1357998390 is about 36851.0297006746. The cubic root of 1357998390 is about 1107.3878435273.

The spelling of 1357998390 in words is "one billion, three hundred fifty-seven million, nine hundred ninety-eight thousand, three hundred ninety".