1452947891 has 8 divisors (see below), whose sum is σ = 1538776944. Its totient is φ = 1367159040.

The previous prime is 1452947827. The next prime is 1452947893. The reversal of 1452947891 is 1987492541.

It is a happy number.

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

It is not a de Polignac number, because 1452947891 - 2⁶ = 1452947827 is a prime.

It is a super-2 number, since 2×1452947891² = 4222115147922695762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1452947893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97076 + ... + 111038.

It is an arithmetic number, because the mean of its divisors is an integer number (192347118).

Almost surely, 2^1452947891 is an apocalyptic number.

1452947891 is a deficient number, since it is larger than the sum of its proper divisors (85829053).

1452947891 is a wasteful number, since it uses less digits than its factorization.

1452947891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101.

The product of its digits is 725760, while the sum is 50.

The square root of 1452947891 is about 38117.5535809947. The cubic root of 1452947891 is about 1132.6177052475.

The spelling of 1452947891 in words is "one billion, four hundred fifty-two million, nine hundred forty-seven thousand, eight hundred ninety-one".