1974889838 has 8 divisors (see below), whose sum is σ = 2962771680. Its totient is φ = 987299280.

The previous prime is 1974889801. The next prime is 1974889843. The reversal of 1974889838 is 8389884791.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54998 + ... + 83513.

It is an arithmetic number, because the mean of its divisors is an integer number (370346460).

Almost surely, 2^1974889838 is an apocalyptic number.

1974889838 is a deficient number, since it is larger than the sum of its proper divisors (987881842).

1974889838 is a wasteful number, since it uses less digits than its factorization.

1974889838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145642.

The product of its digits is 27869184, while the sum is 65.

The square root of 1974889838 is about 44439.7326499609. The cubic root of 1974889838 is about 1254.6260242403.

The spelling of 1974889838 in words is "one billion, nine hundred seventy-four million, eight hundred eighty-nine thousand, eight hundred thirty-eight".