1213149669 has 8 divisors (see below), whose sum is σ = 1655150112. Its totient is φ = 789957840.

The previous prime is 1213149667. The next prime is 1213149671. The reversal of 1213149669 is 9669413121.

It is an interprime number because it is at equal distance from previous prime (1213149667) and next prime (1213149671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213149669 - 2¹ = 1213149667 is a prime.

It is a super-2 number, since 2×1213149669² = 2943464238789619122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1213149669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213149661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4702002 + ... + 4702259.

It is an arithmetic number, because the mean of its divisors is an integer number (206893764).

Almost surely, 2^1213149669 is an apocalyptic number.

It is an amenable number.

1213149669 is a deficient number, since it is larger than the sum of its proper divisors (442000443).

1213149669 is an equidigital number, since it uses as much as digits as its factorization.

1213149669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9404307.

The product of its digits is 69984, while the sum is 42.

The square root of 1213149669 is about 34830.2981468721. The cubic root of 1213149669 is about 1066.5260346605.

The spelling of 1213149669 in words is "one billion, two hundred thirteen million, one hundred forty-nine thousand, six hundred sixty-nine".