1012153444 has 6 divisors (see below), whose sum is σ = 1771268534. Its totient is φ = 506076720.

The previous prime is 1012153423. The next prime is 1012153459. The reversal of 1012153444 is 4443512101.

It can be written as a sum of positive squares in only one way, i.e., 1005650944 + 6502500 = 31712^2 + 2550^2 .

It is a super-2 number, since 2×1012153444² = 2048909188402122272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126519177 + ... + 126519184.

Almost surely, 2^1012153444 is an apocalyptic number.

It is an amenable number.

1012153444 is a deficient number, since it is larger than the sum of its proper divisors (759115090).

1012153444 is a wasteful number, since it uses less digits than its factorization.

1012153444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253038365 (or 253038363 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1012153444 is about 31814.3590851678. The cubic root of 1012153444 is about 1004.0348461210.

Adding to 1012153444 its reverse (4443512101), we get a palindrome (5455665545).

The spelling of 1012153444 in words is "one billion, twelve million, one hundred fifty-three thousand, four hundred forty-four".