1988190842 has 32 divisors (see below), whose sum is σ = 3294756864. Its totient is φ = 892306800.

The previous prime is 1988190823. The next prime is 1988190899. The reversal of 1988190842 is 2480918891.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 621467 + ... + 624657.

It is an arithmetic number, because the mean of its divisors is an integer number (102961152).

Almost surely, 2^1988190842 is an apocalyptic number.

1988190842 is a deficient number, since it is larger than the sum of its proper divisors (1306566022).

1988190842 is a wasteful number, since it uses less digits than its factorization.

1988190842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554.

The product of its (nonzero) digits is 331776, while the sum is 50.

The square root of 1988190842 is about 44589.1336762669. The cubic root of 1988190842 is about 1257.4363853689.

The spelling of 1988190842 in words is "one billion, nine hundred eighty-eight million, one hundred ninety thousand, eight hundred forty-two".