145291418 has 32 divisors (see below), whose sum is σ = 236234880. Its totient is φ = 66769920.

The previous prime is 145291409. The next prime is 145291439. The reversal of 145291418 is 814192541.

It is a super-2 number, since 2×145291418² = 42219192288901448, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335330 + ... + 335762.

It is an arithmetic number, because the mean of its divisors is an integer number (7382340).

Almost surely, 2^145291418 is an apocalyptic number.

145291418 is a deficient number, since it is larger than the sum of its proper divisors (90943462).

145291418 is a wasteful number, since it uses less digits than its factorization.

145291418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662.

The product of its digits is 11520, while the sum is 35.

The square root of 145291418 is about 12053.6889788977. The cubic root of 145291418 is about 525.7105034708.

The spelling of 145291418 in words is "one hundred forty-five million, two hundred ninety-one thousand, four hundred eighteen".