100951998 has 16 divisors (see below), whose sum is σ = 230747520. Its totient is φ = 28843416.

The previous prime is 100951993. The next prime is 100952023. The reversal of 100951998 is 899159001.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 2403619 = 100951998 / (1 + 0 + 0 + 9 + 5 + 1 + 9 + 9 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100951993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201768 + ... + 1201851.

It is an arithmetic number, because the mean of its divisors is an integer number (14421720).

Almost surely, 2^100951998 is an apocalyptic number.

100951998 is an abundant number, since it is smaller than the sum of its proper divisors (129795522).

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

100951998 is a wasteful number, since it uses less digits than its factorization.

100951998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403631.

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 100951998 is about 10047.4871485362. The cubic root of 100951998 is about 465.6271616073.

The spelling of 100951998 in words is "one hundred million, nine hundred fifty-one thousand, nine hundred ninety-eight".