1156461144 has 32 divisors (see below), whose sum is σ = 3043320000. Its totient is φ = 365198112.

The previous prime is 1156461083. The next prime is 1156461149. The reversal of 1156461144 is 4411646511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156461149) 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, 1267594 + ... + 1268505.

It is an arithmetic number, because the mean of its divisors is an integer number (95103750).

Almost surely, 2^1156461144 is an apocalyptic number.

It is an amenable number.

1156461144 is an abundant number, since it is smaller than the sum of its proper divisors (1886858856).

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

1156461144 is a wasteful number, since it uses less digits than its factorization.

1156461144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536127 (or 2536123 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 1156461144 is about 34006.7808532357. The cubic root of 1156461144 is about 1049.6479981079.

The spelling of 1156461144 in words is "one billion, one hundred fifty-six million, four hundred sixty-one thousand, one hundred forty-four".