1012949388 has 144 divisors (see below), whose sum is σ = 2916950400. Its totient is φ = 304819200.

The previous prime is 1012949363. The next prime is 1012949393. The reversal of 1012949388 is 8839492101.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2255788 + ... + 2256236.

It is an arithmetic number, because the mean of its divisors is an integer number (20256600).

It is a vampire number, since it can be written as 11394 ⋅ 88902 (with its own digits).

Almost surely, 2^1012949388 is an apocalyptic number.

1012949388 is a gapful number since it is divisible by the number (18) 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 1012949388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1458475200).

1012949388 is an abundant number, since it is smaller than the sum of its proper divisors (1904001012).

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

1012949388 is a wasteful number, since it uses less digits than its factorization.

1012949388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1012949388 is about 31826.8658211895. The cubic root of 1012949388 is about 1004.2979637099.

The spelling of 1012949388 in words is "one billion, twelve million, nine hundred forty-nine thousand, three hundred eighty-eight".