146991145 has 8 divisors (see below), whose sum is σ = 201587904. Its totient is φ = 100793904.

The previous prime is 146991133. The next prime is 146991179. The reversal of 146991145 is 541199641.

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

It is a cyclic number.

It is not a de Polignac number, because 146991145 - 2⁷ = 146991017 is a prime.

It is a super-2 number, since 2×146991145² = 43212793416822050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146991098 and 146991107.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2099839 + ... + 2099908.

It is an arithmetic number, because the mean of its divisors is an integer number (25198488).

Almost surely, 2^146991145 is an apocalyptic number.

It is an amenable number.

146991145 is a deficient number, since it is larger than the sum of its proper divisors (54596759).

146991145 is an equidigital number, since it uses as much as digits as its factorization.

146991145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4199759.

The product of its digits is 38880, while the sum is 40.

The square root of 146991145 is about 12123.9904734374. The cubic root of 146991145 is about 527.7526114275.

The spelling of 146991145 in words is "one hundred forty-six million, nine hundred ninety-one thousand, one hundred forty-five".