1974013987 has 8 divisors (see below), whose sum is σ = 2266810560. Its totient is φ = 1700107560.

The previous prime is 1974013967. The next prime is 1974013997. The reversal of 1974013987 is 7893104791.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1974013987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1974013987.

It is not an unprimeable number, because it can be changed into a prime (1974013907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4722313 + ... + 4722730.

It is an arithmetic number, because the mean of its divisors is an integer number (283351320).

Almost surely, 2^1974013987 is an apocalyptic number.

1974013987 is a deficient number, since it is larger than the sum of its proper divisors (292796573).

1974013987 is a wasteful number, since it uses less digits than its factorization.

1974013987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9445073.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 1974013987 is about 44429.8771886666. The cubic root of 1974013987 is about 1254.4405239450.

The spelling of 1974013987 in words is "one billion, nine hundred seventy-four million, thirteen thousand, nine hundred eighty-seven".