1988059698 has 24 divisors (see below), whose sum is σ = 4446414336. Its totient is φ = 641309400.

The previous prime is 1988059687. The next prime is 1988059709. The reversal of 1988059698 is 8969508891.

It is an interprime number because it is at equal distance from previous prime (1988059687) and next prime (1988059709).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1780858 + ... + 1781973.

It is an arithmetic number, because the mean of its divisors is an integer number (185267264).

Almost surely, 2^1988059698 is an apocalyptic number.

1988059698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1988059698 is an abundant number, since it is smaller than the sum of its proper divisors (2458354638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988059698 is a wasteful number, since it uses less digits than its factorization.

1988059698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562870 (or 3562867 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 63.

The square root of 1988059698 is about 44587.6630695084. The cubic root of 1988059698 is about 1257.4087373082.

The spelling of 1988059698 in words is "one billion, nine hundred eighty-eight million, fifty-nine thousand, six hundred ninety-eight".