1161256038 has 16 divisors (see below), whose sum is σ = 2379159216. Its totient is φ = 377644160.

The previous prime is 1161256021. The next prime is 1161256067. The reversal of 1161256038 is 8306521611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360031 + ... + 2360522.

It is an arithmetic number, because the mean of its divisors is an integer number (148697451).

Almost surely, 2^1161256038 is an apocalyptic number.

1161256038 is an abundant number, since it is smaller than the sum of its proper divisors (1217903178).

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

1161256038 is a wasteful number, since it uses less digits than its factorization.

1161256038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720599.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1161256038 is about 34077.2070158339. The cubic root of 1161256038 is about 1051.0966736803.

Adding to 1161256038 its reverse (8306521611), we get a palindrome (9467777649).

The spelling of 1161256038 in words is "one billion, one hundred sixty-one million, two hundred fifty-six thousand, thirty-eight".