151993998 has 48 divisors (see below), whose sum is σ = 357280560. Its totient is φ = 46420992.

The previous prime is 151993997. The next prime is 151994009. The reversal of 151993998 is 899399151.

151993998 is a `hidden beast` number, since 1 + 519 + 9 + 39 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151993993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30190 + ... + 34862.

It is an arithmetic number, because the mean of its divisors is an integer number (7443345).

Almost surely, 2^151993998 is an apocalyptic number.

151993998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 151993998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178640280).

151993998 is an abundant number, since it is smaller than the sum of its proper divisors (205286562).

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

151993998 is a wasteful number, since it uses less digits than its factorization.

151993998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4833 (or 4830 counting only the distinct ones).

The product of its digits is 787320, while the sum is 54.

The square root of 151993998 is about 12328.5845902926. The cubic root of 151993998 is about 533.6733052016.

The spelling of 151993998 in words is "one hundred fifty-one million, nine hundred ninety-three thousand, nine hundred ninety-eight".