1398308090 has 16 divisors (see below), whose sum is σ = 2554522272. Its totient is φ = 550974864.

The previous prime is 1398308081. The next prime is 1398308111. The reversal of 1398308090 is 908038931.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042844 + ... + 1044183.

It is an arithmetic number, because the mean of its divisors is an integer number (159657642).

Almost surely, 2^1398308090 is an apocalyptic number.

1398308090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1398308090 is a deficient number, since it is larger than the sum of its proper divisors (1156214182).

1398308090 is a wasteful number, since it uses less digits than its factorization.

1398308090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087101.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1398308090 is about 37393.9579344043. The cubic root of 1398308090 is about 1118.2381125633.

The spelling of 1398308090 in words is "one billion, three hundred ninety-eight million, three hundred eight thousand, ninety".