1023640937 has 8 divisors (see below), whose sum is σ = 1116933312. Its totient is φ = 930387600.

The previous prime is 1023640931. The next prime is 1023640957. The reversal of 1023640937 is 7390463201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1023640937 - 2¹² = 1023636841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023640897 and 1023640906.

It is not an unprimeable number, because it can be changed into a prime (1023640931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85823 + ... + 97019.

It is an arithmetic number, because the mean of its divisors is an integer number (139616664).

Almost surely, 2^1023640937 is an apocalyptic number.

It is an amenable number.

1023640937 is a deficient number, since it is larger than the sum of its proper divisors (93292375).

1023640937 is a wasteful number, since it uses less digits than its factorization.

1023640937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19519.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1023640937 is about 31994.3891487242. The cubic root of 1023640937 is about 1007.8190159787.

The spelling of 1023640937 in words is "one billion, twenty-three million, six hundred forty thousand, nine hundred thirty-seven".