1020045015 has 64 divisors (see below), whose sum is σ = 1991808000. Its totient is φ = 491184000.

The previous prime is 1020045007. The next prime is 1020045029. The reversal of 1020045015 is 5105400201.

1020045015 is a `hidden beast` number, since 1 + 0 + 200 + 450 + 15 = 666.

It is not a de Polignac number, because 1020045015 - 2³ = 1020045007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 221961 + ... + 226509.

It is an arithmetic number, because the mean of its divisors is an integer number (31122000).

Almost surely, 2^1020045015 is an apocalyptic number.

1020045015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020045015 is a deficient number, since it is larger than the sum of its proper divisors (971762985).

1020045015 is a wasteful number, since it uses less digits than its factorization.

1020045015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4725 (or 4719 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 1020045015 is about 31938.1435747289. The cubic root of 1020045015 is about 1006.6375175518.

Adding to 1020045015 its reverse (5105400201), we get a palindrome (6125445216).

The spelling of 1020045015 in words is "one billion, twenty million, forty-five thousand, fifteen".