1012646544 has 120 divisors (see below), whose sum is σ = 3277290240. Its totient is φ = 267063552.

The previous prime is 1012646519. The next prime is 1012646549. The reversal of 1012646544 is 4456462101.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1012646549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14017 + ... + 47135.

It is an arithmetic number, because the mean of its divisors is an integer number (27310752).

Almost surely, 2^1012646544 is an apocalyptic number.

1012646544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012646544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638645120).

1012646544 is an abundant number, since it is smaller than the sum of its proper divisors (2264643696).

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

1012646544 is a wasteful number, since it uses less digits than its factorization.

1012646544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33157 (or 33144 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1012646544 is about 31822.1077868830. The cubic root of 1012646544 is about 1004.1978679132.

The spelling of 1012646544 in words is "one billion, twelve million, six hundred forty-six thousand, five hundred forty-four".