1023921495 has 48 divisors (see below), whose sum is σ = 1913839200. Its totient is φ = 504714240.

The previous prime is 1023921439. The next prime is 1023921511. The reversal of 1023921495 is 5941293201.

It is not a de Polignac number, because 1023921495 - 2⁹ = 1023920983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20451 + ... + 49659.

It is an arithmetic number, because the mean of its divisors is an integer number (39871650).

Almost surely, 2^1023921495 is an apocalyptic number.

1023921495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1023921495 is a deficient number, since it is larger than the sum of its proper divisors (889917705).

1023921495 is a wasteful number, since it uses less digits than its factorization.

1023921495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29280 (or 29277 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1023921495 is about 31998.7733358640. The cubic root of 1023921495 is about 1007.9110814186.

The spelling of 1023921495 in words is "one billion, twenty-three million, nine hundred twenty-one thousand, four hundred ninety-five".