1002156530 has 32 divisors (see below), whose sum is σ = 1864166400. Its totient is φ = 387495360.

The previous prime is 1002156523. The next prime is 1002156557. The reversal of 1002156530 is 356512001.

It is a junction number, because it is equal to n+sod(n) for n = 1002156496 and 1002156505.

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, 479147 + ... + 481233.

It is an arithmetic number, because the mean of its divisors is an integer number (58255200).

Almost surely, 2^1002156530 is an apocalyptic number.

1002156530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002156530 is a deficient number, since it is larger than the sum of its proper divisors (862009870).

1002156530 is a wasteful number, since it uses less digits than its factorization.

1002156530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1002156530 is about 31656.8559714953. The cubic root of 1002156530 is about 1000.7183272158.

Adding to 1002156530 its reverse (356512001), we get a palindrome (1358668531).

The spelling of 1002156530 in words is "one billion, two million, one hundred fifty-six thousand, five hundred thirty".