1020144915 has 16 divisors (see below), whose sum is σ = 1813591200. Its totient is φ = 544077216.

The previous prime is 1020144913. The next prime is 1020144989. The reversal of 1020144915 is 5194410201.

1020144915 is a `hidden beast` number, since 1 + 0 + 201 + 449 + 15 = 666.

It is not a de Polignac number, because 1020144915 - 2¹ = 1020144913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1020144913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3778180 + ... + 3778449.

It is an arithmetic number, because the mean of its divisors is an integer number (113349450).

Almost surely, 2^1020144915 is an apocalyptic number.

1020144915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020144915 is a deficient number, since it is larger than the sum of its proper divisors (793446285).

1020144915 is an equidigital number, since it uses as much as digits as its factorization.

1020144915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556643 (or 7556637 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1020144915 is about 31939.7074970952. The cubic root of 1020144915 is about 1006.6703787831.

It can be divided in two parts, 102014 and 4915, that added together give a square (106929 = 327²).

The spelling of 1020144915 in words is "one billion, twenty million, one hundred forty-four thousand, nine hundred fifteen".