1445231090 has 8 divisors (see below), whose sum is σ = 2601415980. Its totient is φ = 578092432.

The previous prime is 1445231089. The next prime is 1445231167. The reversal of 1445231090 is 901325441.

It can be written as a sum of positive squares in 2 ways, for example, as 1365967681 + 79263409 = 36959^2 + 8903^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72261545 + ... + 72261564.

Almost surely, 2^1445231090 is an apocalyptic number.

1445231090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1445231090 is a deficient number, since it is larger than the sum of its proper divisors (1156184890).

1445231090 is a wasteful number, since it uses less digits than its factorization.

1445231090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144523116.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1445231090 is about 38016.1951015617. The cubic root of 1445231090 is about 1130.6089833598.

The spelling of 1445231090 in words is "one billion, four hundred forty-five million, two hundred thirty-one thousand, ninety".