1065236491 has 8 divisors (see below), whose sum is σ = 1162815984. Its totient is φ = 967780320.

The previous prime is 1065236483. The next prime is 1065236509. The reversal of 1065236491 is 1946325601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1065236491 - 2³ = 1065236483 is a prime.

It is a super-2 number, since 2×1065236491² = 2269457563515986162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065236491.

It is not an unprimeable number, because it can be changed into a prime (1065236411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12276 + ... + 47761.

It is an arithmetic number, because the mean of its divisors is an integer number (145351998).

Almost surely, 2^1065236491 is an apocalyptic number.

1065236491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1065236491 is a deficient number, since it is larger than the sum of its proper divisors (97579493).

1065236491 is a wasteful number, since it uses less digits than its factorization.

1065236491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61661.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1065236491 is about 32637.9608891242. The cubic root of 1065236491 is about 1021.2890568229.

The spelling of 1065236491 in words is "one billion, sixty-five million, two hundred thirty-six thousand, four hundred ninety-one".