101601998 has 4 divisors (see below), whose sum is σ = 152403000. Its totient is φ = 50800998.

The previous prime is 101601989. The next prime is 101602003. The reversal of 101601998 is 899106101.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25400498 + ... + 25400501.

It is an arithmetic number, because the mean of its divisors is an integer number (38100750).

Almost surely, 2^101601998 is an apocalyptic number.

101601998 is a deficient number, since it is larger than the sum of its proper divisors (50801002).

101601998 is an equidigital number, since it uses as much as digits as its factorization.

101601998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50801001.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 101601998 is about 10079.7816444604. The cubic root of 101601998 is about 466.6243695224.

The spelling of 101601998 in words is "one hundred one million, six hundred one thousand, nine hundred ninety-eight".