1453665213 has 192 divisors, whose sum is σ = 2987712000. Its totient is φ = 670602240.

The previous prime is 1453665203. The next prime is 1453665217. The reversal of 1453665213 is 3125663541.

It is not a de Polignac number, because 1453665213 - 2⁶ = 1453665149 is a prime.

It is a super-2 number, since 2×1453665213² = 4226285102972670738, which contains 22 as substring.

Its product of digits (64800) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1453665217) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16333273 + ... + 16333361.

It is an arithmetic number, because the mean of its divisors is an integer number (15561000).

Almost surely, 2^1453665213 is an apocalyptic number.

1453665213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1453665213 is an abundant number, since it is smaller than the sum of its proper divisors (1534046787).

1453665213 is a wasteful number, since it uses less digits than its factorization.

1453665213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 160 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 1453665213 is about 38126.9617593639. The cubic root of 1453665213 is about 1132.8040661250.

It can be divided in two parts, 1453 and 665213, that added together give a palindrome (666666).

The spelling of 1453665213 in words is "one billion, four hundred fifty-three million, six hundred sixty-five thousand, two hundred thirteen".