1165726436 has 24 divisors (see below), whose sum is σ = 2334459456. Its totient is φ = 498952800.

The previous prime is 1165726433. The next prime is 1165726439. The reversal of 1165726436 is 6346275611.

It is an interprime number because it is at equal distance from previous prime (1165726433) and next prime (1165726439).

It is a junction number, because it is equal to n+sod(n) for n = 1165726393 and 1165726402.

It is not an unprimeable number, because it can be changed into a prime (1165726433) 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, 4415 + ... + 48486.

It is an arithmetic number, because the mean of its divisors is an integer number (97269144).

Almost surely, 2^1165726436 is an apocalyptic number.

It is an amenable number.

1165726436 is an abundant number, since it is smaller than the sum of its proper divisors (1168733020).

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

1165726436 is a wasteful number, since it uses less digits than its factorization.

1165726436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53699 (or 53697 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 1165726436 is about 34142.7362113818. The cubic root of 1165726436 is about 1052.4437219378.

The spelling of 1165726436 in words is "one billion, one hundred sixty-five million, seven hundred twenty-six thousand, four hundred thirty-six".