1485897431 has 4 divisors (see below), whose sum is σ = 1487257992. Its totient is φ = 1484536872.

The previous prime is 1485897421. The next prime is 1485897449. The reversal of 1485897431 is 1347985841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1347985841 = 2707 ⋅497963.

It is a cyclic number.

It is not a de Polignac number, because 1485897431 - 2²² = 1481703127 is a prime.

It is a super-2 number, since 2×1485897431² = 4415782350904799522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1485897431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485897401) 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, 678641 + ... + 680826.

It is an arithmetic number, because the mean of its divisors is an integer number (371814498).

Almost surely, 2^1485897431 is an apocalyptic number.

1485897431 is a deficient number, since it is larger than the sum of its proper divisors (1360561).

1485897431 is a wasteful number, since it uses less digits than its factorization.

1485897431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360560.

The product of its digits is 967680, while the sum is 50.

The square root of 1485897431 is about 38547.3401287300. The cubic root of 1485897431 is about 1141.1155160167.

The spelling of 1485897431 in words is "one billion, four hundred eighty-five million, eight hundred ninety-seven thousand, four hundred thirty-one".