1012645788 has 96 divisors (see below), whose sum is σ = 2951854080. Its totient is φ = 262491840.

The previous prime is 1012645763. The next prime is 1012645789. The reversal of 1012645788 is 8875462101.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012645789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 682095 + ... + 683577.

It is an arithmetic number, because the mean of its divisors is an integer number (30748480).

Almost surely, 2^1012645788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012645788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475927040).

1012645788 is an abundant number, since it is smaller than the sum of its proper divisors (1939208292).

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

1012645788 is a wasteful number, since it uses less digits than its factorization.

1012645788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2245 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 1012645788 is about 31822.0959083465. The cubic root of 1012645788 is about 1004.1976180157.

The spelling of 1012645788 in words is "one billion, twelve million, six hundred forty-five thousand, seven hundred eighty-eight".