1921150135 has 16 divisors (see below), whose sum is σ = 2505000960. Its totient is φ = 1409058720.

The previous prime is 1921150123. The next prime is 1921150157. The reversal of 1921150135 is 5310511291.

It is not a de Polignac number, because 1921150135 - 2⁵ = 1921150103 is a prime.

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, 323227 + ... + 329116.

It is an arithmetic number, because the mean of its divisors is an integer number (156562560).

Almost surely, 2^1921150135 is an apocalyptic number.

1921150135 is a deficient number, since it is larger than the sum of its proper divisors (583850825).

1921150135 is a wasteful number, since it uses less digits than its factorization.

1921150135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652398.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 1921150135 is about 43830.9266956563. The cubic root of 1921150135 is about 1243.1411290139.

The spelling of 1921150135 in words is "one billion, nine hundred twenty-one million, one hundred fifty thousand, one hundred thirty-five".