1974129474887 has 8 divisors (see below), whose sum is σ = 2008002305904. Its totient is φ = 1940441237568.

The previous prime is 1974129474817. The next prime is 1974129474907. The reversal of 1974129474887 is 7884749214791.

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

It is not a de Polignac number, because 1974129474887 - 2⁸ = 1974129474631 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 1974129474887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974129474817) 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, 46126853 + ... + 46169630.

It is an arithmetic number, because the mean of its divisors is an integer number (251000288238).

Almost surely, 2^{1974129474887} is an apocalyptic number.

1974129474887 is a deficient number, since it is larger than the sum of its proper divisors (33872831017).

1974129474887 is an equidigital number, since it uses as much as digits as its factorization.

1974129474887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92296849.

The product of its digits is 227598336, while the sum is 71.

The spelling of 1974129474887 in words is "one trillion, nine hundred seventy-four billion, one hundred twenty-nine million, four hundred seventy-four thousand, eight hundred eighty-seven".