1213497495 has 72 divisors (see below), whose sum is σ = 2453409504. Its totient is φ = 553246848.

The previous prime is 1213497407. The next prime is 1213497497. The reversal of 1213497495 is 5947943121.

1213497495 is a `hidden beast` number, since 121 + 34 + 9 + 7 + 495 = 666.

It is not a de Polignac number, because 1213497495 - 2¹⁸ = 1213235351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1213497495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213497497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1602657 + ... + 1603413.

It is an arithmetic number, because the mean of its divisors is an integer number (34075132).

Almost surely, 2^1213497495 is an apocalyptic number.

1213497495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213497495 is an abundant number, since it is smaller than the sum of its proper divisors (1239912009).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213497495 is a wasteful number, since it uses less digits than its factorization.

1213497495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1499 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1213497495 is about 34835.2909418021. The cubic root of 1213497495 is about 1066.6279539444.

The spelling of 1213497495 in words is "one billion, two hundred thirteen million, four hundred ninety-seven thousand, four hundred ninety-five".