1023495402 has 64 divisors (see below), whose sum is σ = 2134978560. Its totient is φ = 326913600.

The previous prime is 1023495391. The next prime is 1023495409. The reversal of 1023495402 is 2045943201.

It is a self number, because there is not a number n which added to its sum of digits gives 1023495402.

It is not an unprimeable number, because it can be changed into a prime (1023495409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3290827 + ... + 3291137.

It is an arithmetic number, because the mean of its divisors is an integer number (33359040).

Almost surely, 2^1023495402 is an apocalyptic number.

1023495402 is an abundant number, since it is smaller than the sum of its proper divisors (1111483158).

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

1023495402 is a wasteful number, since it uses less digits than its factorization.

1023495402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1023495402 is about 31992.1146847157. The cubic root of 1023495402 is about 1007.7712518696.

The spelling of 1023495402 in words is "one billion, twenty-three million, four hundred ninety-five thousand, four hundred two".