1015401012 has 48 divisors (see below), whose sum is σ = 2454432960. Its totient is φ = 326333952.

The previous prime is 1015400999. The next prime is 1015401047. The reversal of 1015401012 is 2101045101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1015400982 and 1015401000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314028 + ... + 317244.

It is an arithmetic number, because the mean of its divisors is an integer number (51134020).

Almost surely, 2^1015401012 is an apocalyptic number.

1015401012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1015401012 is an abundant number, since it is smaller than the sum of its proper divisors (1439031948).

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

1015401012 is a wasteful number, since it uses less digits than its factorization.

1015401012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160 (or 4158 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1015401012 is about 31865.3575533054. The cubic root of 1015401012 is about 1005.1075392956.

Adding to 1015401012 its reverse (2101045101), we get a palindrome (3116446113).

The spelling of 1015401012 in words is "one billion, fifteen million, four hundred one thousand, twelve".