1497649253 has 4 divisors (see below), whose sum is σ = 1503476940. Its totient is φ = 1491821568.

The previous prime is 1497649243. The next prime is 1497649267. The reversal of 1497649253 is 3529467941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3529467941 = 751 ⋅4699691.

It can be written as a sum of positive squares in 2 ways, for example, as 886669729 + 610979524 = 29777^2 + 24718^2 .

It is a cyclic number.

It is not a de Polignac number, because 1497649253 - 2¹⁴ = 1497632869 is a prime.

It is a super-2 number, since 2×1497649253² = 4485906570022916018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497649243) 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, 2913458 + ... + 2913971.

It is an arithmetic number, because the mean of its divisors is an integer number (375869235).

Almost surely, 2^1497649253 is an apocalyptic number.

It is an amenable number.

1497649253 is a deficient number, since it is larger than the sum of its proper divisors (5827687).

1497649253 is an equidigital number, since it uses as much as digits as its factorization.

1497649253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5827686.

The product of its digits is 1632960, while the sum is 50.

The square root of 1497649253 is about 38699.4735493908. The cubic root of 1497649253 is about 1144.1159446625.

The spelling of 1497649253 in words is "one billion, four hundred ninety-seven million, six hundred forty-nine thousand, two hundred fifty-three".