1023645974 has 8 divisors (see below), whose sum is σ = 1653582000. Its totient is φ = 472451976.

The previous prime is 1023645971. The next prime is 1023645977. The reversal of 1023645974 is 4795463201.

It is an interprime number because it is at equal distance from previous prime (1023645971) and next prime (1023645977).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023645971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19685474 + ... + 19685525.

It is an arithmetic number, because the mean of its divisors is an integer number (206697750).

Almost surely, 2^1023645974 is an apocalyptic number.

1023645974 is a deficient number, since it is larger than the sum of its proper divisors (629936026).

1023645974 is a wasteful number, since it uses less digits than its factorization.

1023645974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39371014.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 1023645974 is about 31994.4678655545. The cubic root of 1023645974 is about 1007.8206690245.

The spelling of 1023645974 in words is "one billion, twenty-three million, six hundred forty-five thousand, nine hundred seventy-four".