1010191912 has 8 divisors (see below), whose sum is σ = 1894109850. Its totient is φ = 505095952.

The previous prime is 1010191891. The next prime is 1010191913. The reversal of 1010191912 is 2191910101.

It can be written as a sum of positive squares in only one way, i.e., 958150116 + 52041796 = 30954^2 + 7214^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1010191913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63136987 + ... + 63137002.

Almost surely, 2^1010191912 is an apocalyptic number.

It is an amenable number.

1010191912 is a deficient number, since it is larger than the sum of its proper divisors (883917938).

1010191912 is a wasteful number, since it uses less digits than its factorization.

1010191912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126273995 (or 126273991 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 25.

The square root of 1010191912 is about 31783.5163567532. The cubic root of 1010191912 is about 1003.3858272358.

The spelling of 1010191912 in words is "one billion, ten million, one hundred ninety-one thousand, nine hundred twelve".