445265418 has 64 divisors (see below), whose sum is σ = 1053480960. Its totient is φ = 124141248.

The previous prime is 445265417. The next prime is 445265419. The reversal of 445265418 is 814562544.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (445265417) and next prime (445265419).

It is a super-2 number, since 2×445265418² = 396522584933429448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (445265417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27555 + ... + 40617.

It is an arithmetic number, because the mean of its divisors is an integer number (16460640).

Almost surely, 2^445265418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445265418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526740480).

445265418 is an abundant number, since it is smaller than the sum of its proper divisors (608215542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445265418 is a wasteful number, since it uses less digits than its factorization.

445265418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13123.

The product of its digits is 153600, while the sum is 39.

The square root of 445265418 is about 21101.3131818852. The cubic root of 445265418 is about 763.6124294009.

The spelling of 445265418 in words is "four hundred forty-five million, two hundred sixty-five thousand, four hundred eighteen".