146819990 has 32 divisors (see below), whose sum is σ = 280822464. Its totient is φ = 55075840.

The previous prime is 146819989. The next prime is 146819993. The reversal of 146819990 is 99918641.

It is a super-2 number, since 2×146819990² = 43112218927200200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146819993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51482 + ... + 54258.

It is an arithmetic number, because the mean of its divisors is an integer number (8775702).

Almost surely, 2^146819990 is an apocalyptic number.

146819990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

146819990 is a deficient number, since it is larger than the sum of its proper divisors (134002474).

146819990 is a wasteful number, since it uses less digits than its factorization.

146819990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 146819990 is about 12116.9298916846. The cubic root of 146819990 is about 527.5476952748.

The spelling of 146819990 in words is "one hundred forty-six million, eight hundred nineteen thousand, nine hundred ninety".