1988974922 has 8 divisors (see below), whose sum is σ = 3254686272. Its totient is φ = 904079500.

The previous prime is 1988974877. The next prime is 1988974943. The reversal of 1988974922 is 2294798891.

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

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, 45203954 + ... + 45203997.

It is an arithmetic number, because the mean of its divisors is an integer number (406835784).

Almost surely, 2^1988974922 is an apocalyptic number.

1988974922 is a deficient number, since it is larger than the sum of its proper divisors (1265711350).

1988974922 is a wasteful number, since it uses less digits than its factorization.

1988974922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90407964.

The product of its digits is 5225472, while the sum is 59.

The square root of 1988974922 is about 44597.9250862638. The cubic root of 1988974922 is about 1257.6016614450.

The spelling of 1988974922 in words is "one billion, nine hundred eighty-eight million, nine hundred seventy-four thousand, nine hundred twenty-two".