1450189681 has 4 divisors (see below), whose sum is σ = 1463023332. Its totient is φ = 1437356032.

The previous prime is 1450189669. The next prime is 1450189691. The reversal of 1450189681 is 1869810541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37933281 + 1412256400 = 6159^2 + 37580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1450189681 - 2¹³ = 1450181489 is a prime.

It is a super-2 number, since 2×1450189681² = 4206100221757763522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1450189691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6416656 + ... + 6416881.

It is an arithmetic number, because the mean of its divisors is an integer number (365755833).

Almost surely, 2^1450189681 is an apocalyptic number.

It is an amenable number.

1450189681 is a deficient number, since it is larger than the sum of its proper divisors (12833651).

1450189681 is a wasteful number, since it uses less digits than its factorization.

1450189681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833650.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 1450189681 is about 38081.3560814213. The cubic root of 1450189681 is about 1131.9005479873.

The spelling of 1450189681 in words is "one billion, four hundred fifty million, one hundred eighty-nine thousand, six hundred eighty-one".