1358904990 has 32 divisors (see below), whose sum is σ = 3269185920. Its totient is φ = 361506464.

The previous prime is 1358904961. The next prime is 1358905003. The reversal of 1358904990 is 994098531.

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, 41484 + ... + 66623.

It is an arithmetic number, because the mean of its divisors is an integer number (102162060).

Almost surely, 2^1358904990 is an apocalyptic number.

1358904990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1358904990 is an abundant number, since it is smaller than the sum of its proper divisors (1910280930).

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

1358904990 is a wasteful number, since it uses less digits than its factorization.

1358904990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108536.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1358904990 is about 36863.3285257856. The cubic root of 1358904990 is about 1107.6342194914.

The spelling of 1358904990 in words is "one billion, three hundred fifty-eight million, nine hundred four thousand, nine hundred ninety".