1447451157 has 16 divisors (see below), whose sum is σ = 2015193600. Its totient is φ = 922394352.

The previous prime is 1447451153. The next prime is 1447451207. The reversal of 1447451157 is 7511547441.

It is not a de Polignac number, because 1447451157 - 2² = 1447451153 is a prime.

It is a super-2 number, since 2×1447451157² = 4190229703801277298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447451153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111058 + ... + 123404.

It is an arithmetic number, because the mean of its divisors is an integer number (125949600).

Almost surely, 2^1447451157 is an apocalyptic number.

It is an amenable number.

1447451157 is a deficient number, since it is larger than the sum of its proper divisors (567742443).

1447451157 is a wasteful number, since it uses less digits than its factorization.

1447451157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14072.

The product of its digits is 78400, while the sum is 39.

The square root of 1447451157 is about 38045.3828604734. The cubic root of 1447451157 is about 1131.1876090577.

Adding to 1447451157 its reverse (7511547441), we get a palindrome (8958998598).

The spelling of 1447451157 in words is "one billion, four hundred forty-seven million, four hundred fifty-one thousand, one hundred fifty-seven".