162401998 has 8 divisors (see below), whose sum is σ = 265748760. Its totient is φ = 73819080.

The previous prime is 162401971. The next prime is 162401999. The reversal of 162401998 is 899104261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 162401998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162401999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3690933 + ... + 3690976.

It is an arithmetic number, because the mean of its divisors is an integer number (33218595).

Almost surely, 2^162401998 is an apocalyptic number.

162401998 is a deficient number, since it is larger than the sum of its proper divisors (103346762).

162401998 is a wasteful number, since it uses less digits than its factorization.

162401998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7381922.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 162401998 is about 12743.7042495500. The cubic root of 162401998 is about 545.5867182542.

The spelling of 162401998 in words is "one hundred sixty-two million, four hundred one thousand, nine hundred ninety-eight".