1321900092 has 36 divisors (see below), whose sum is σ = 3375926736. Its totient is φ = 436089600.

The previous prime is 1321900087. The next prime is 1321900117. The reversal of 1321900092 is 2900091231.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185784 + ... + 192767.

Almost surely, 2^1321900092 is an apocalyptic number.

1321900092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321900092 is an abundant number, since it is smaller than the sum of its proper divisors (2054026644).

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

1321900092 is a wasteful number, since it uses less digits than its factorization.

1321900092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378658 (or 378653 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1321900092 is about 36357.9440012771. The cubic root of 1321900092 is about 1097.4874034423.

The spelling of 1321900092 in words is "one billion, three hundred twenty-one million, nine hundred thousand, ninety-two".