1993591265 has 16 divisors (see below), whose sum is σ = 2480844288. Its totient is φ = 1536687936.

The previous prime is 1993591219. The next prime is 1993591267. The reversal of 1993591265 is 5621953991.

It is a cyclic number.

It is not a de Polignac number, because 1993591265 - 2¹⁰ = 1993590241 is a prime.

It is a super-2 number, since 2×1993591265² = 7948812263768600450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1993591267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33257 + ... + 71366.

It is an arithmetic number, because the mean of its divisors is an integer number (155052768).

Almost surely, 2^1993591265 is an apocalyptic number.

It is an amenable number.

1993591265 is a deficient number, since it is larger than the sum of its proper divisors (487253023).

1993591265 is a wasteful number, since it uses less digits than its factorization.

1993591265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104768.

The product of its digits is 656100, while the sum is 50.

The square root of 1993591265 is about 44649.6502225941. The cubic root of 1993591265 is about 1258.5738598830.

The spelling of 1993591265 in words is "one billion, nine hundred ninety-three million, five hundred ninety-one thousand, two hundred sixty-five".