1431454889 has 24 divisors (see below), whose sum is σ = 1553748480. Its totient is φ = 1317964032.

The previous prime is 1431454867. The next prime is 1431454897. The reversal of 1431454889 is 9884541341.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1431454889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431454589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4054937 + ... + 4055289.

It is an arithmetic number, because the mean of its divisors is an integer number (64739520).

Almost surely, 2^1431454889 is an apocalyptic number.

1431454889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1431454889 is a deficient number, since it is larger than the sum of its proper divisors (122293591).

1431454889 is a wasteful number, since it uses less digits than its factorization.

1431454889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 658 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 1431454889 is about 37834.5726683942. The cubic root of 1431454889 is about 1127.0051191418.

The spelling of 1431454889 in words is "one billion, four hundred thirty-one million, four hundred fifty-four thousand, eight hundred eighty-nine".