145291946 has 16 divisors (see below), whose sum is σ = 228009600. Its totient is φ = 69364320.

The previous prime is 145291919. The next prime is 145291957. The reversal of 145291946 is 649192541.

145291946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145291946² = 42219499144933832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14996 + ... + 22703.

It is an arithmetic number, because the mean of its divisors is an integer number (14250600).

Almost surely, 2^145291946 is an apocalyptic number.

145291946 is a deficient number, since it is larger than the sum of its proper divisors (82717654).

145291946 is a wasteful number, since it uses less digits than its factorization.

145291946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37789.

The product of its digits is 77760, while the sum is 41.

The square root of 145291946 is about 12053.7108808864. The cubic root of 145291946 is about 525.7111402939.

The spelling of 145291946 in words is "one hundred forty-five million, two hundred ninety-one thousand, nine hundred forty-six".