1002623601 has 16 divisors (see below), whose sum is σ = 1534486400. Its totient is φ = 570423168.

The previous prime is 1002623593. The next prime is 1002623621. The reversal of 1002623601 is 1063262001.

It is a happy number.

It is not a de Polignac number, because 1002623601 - 2³ = 1002623593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002623621) 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, 99436 + ... + 109053.

It is an arithmetic number, because the mean of its divisors is an integer number (95905400).

Almost surely, 2^1002623601 is an apocalyptic number.

It is an amenable number.

1002623601 is a deficient number, since it is larger than the sum of its proper divisors (531862799).

1002623601 is a wasteful number, since it uses less digits than its factorization.

1002623601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208728.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1002623601 is about 31664.2322029131. The cubic root of 1002623601 is about 1000.8737699703.

Adding to 1002623601 its reverse (1063262001), we get a palindrome (2065885602).

The spelling of 1002623601 in words is "one billion, two million, six hundred twenty-three thousand, six hundred one".