145677818 has 16 divisors (see below), whose sum is σ = 256719456. Its totient is φ = 61123440.

The previous prime is 145677809. The next prime is 145677823. The reversal of 145677818 is 818776541.

It is a super-2 number, since 2×145677818² = 42444053314482248, which contains 22 as substring.

It is a Curzon number.

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, 254396 + ... + 254967.

It is an arithmetic number, because the mean of its divisors is an integer number (16044966).

Almost surely, 2^145677818 is an apocalyptic number.

145677818 is a deficient number, since it is larger than the sum of its proper divisors (111041638).

145677818 is a wasteful number, since it uses less digits than its factorization.

145677818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509389.

The product of its digits is 376320, while the sum is 47.

The square root of 145677818 is about 12069.7066244379. The cubic root of 145677818 is about 526.1761302535.

The spelling of 145677818 in words is "one hundred forty-five million, six hundred seventy-seven thousand, eight hundred eighteen".