1497149623 has 4 divisors (see below), whose sum is σ = 1501439800. Its totient is φ = 1492859448.

The previous prime is 1497149617. The next prime is 1497149711. The reversal of 1497149623 is 3269417941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1497149623 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 (1497149923) 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 3 ways as a sum of consecutive naturals, for example, 2144565 + ... + 2145262.

It is an arithmetic number, because the mean of its divisors is an integer number (375359950).

Almost surely, 2^1497149623 is an apocalyptic number.

1497149623 is a deficient number, since it is larger than the sum of its proper divisors (4290177).

1497149623 is an equidigital number, since it uses as much as digits as its factorization.

1497149623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290176.

The product of its digits is 326592, while the sum is 46.

The square root of 1497149623 is about 38693.0177551454. The cubic root of 1497149623 is about 1143.9887012002.

The spelling of 1497149623 in words is "one billion, four hundred ninety-seven million, one hundred forty-nine thousand, six hundred twenty-three".