1497664373 has 4 divisors (see below), whose sum is σ = 1498082508. Its totient is φ = 1497246240.

The previous prime is 1497664361. The next prime is 1497664381. The reversal of 1497664373 is 3734667941.

It is a happy number.

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 207561649 + 1290102724 = 14407^2 + 35918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497664373 - 2⁶ = 1497664309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497667373) 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, 203648 + ... + 210873.

It is an arithmetic number, because the mean of its divisors is an integer number (374520627).

Almost surely, 2^1497664373 is an apocalyptic number.

It is an amenable number.

1497664373 is a deficient number, since it is larger than the sum of its proper divisors (418135).

1497664373 is an equidigital number, since it uses as much as digits as its factorization.

1497664373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418134.

The product of its digits is 2286144, while the sum is 50.

The square root of 1497664373 is about 38699.6689003924. The cubic root of 1497664373 is about 1144.1197949131.

The spelling of 1497664373 in words is "one billion, four hundred ninety-seven million, six hundred sixty-four thousand, three hundred seventy-three".