1012651290 has 192 divisors, whose sum is σ = 3187641600. Its totient is φ = 218115072.

The previous prime is 1012651273. The next prime is 1012651327. The reversal of 1012651290 is 921562101.

1012651290 is a `hidden beast` number, since 1 + 0 + 1 + 2 + 651 + 2 + 9 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 784966 + ... + 786254.

It is an arithmetic number, because the mean of its divisors is an integer number (16602300).

Almost surely, 2^1012651290 is an apocalyptic number.

1012651290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012651290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593820800).

1012651290 is an abundant number, since it is smaller than the sum of its proper divisors (2174990310).

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

1012651290 is a wasteful number, since it uses less digits than its factorization.

1012651290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1012651290 is about 31822.1823575945. The cubic root of 1012651290 is about 1004.1994367119.

It can be divided in two parts, 10126 and 51290, that added together give a palindrome (61416).

The spelling of 1012651290 in words is "one billion, twelve million, six hundred fifty-one thousand, two hundred ninety".