1230652669 has 4 divisors (see below), whose sum is σ = 1230726780. Its totient is φ = 1230578560.

The previous prime is 1230652649. The next prime is 1230652681. The reversal of 1230652669 is 9662560321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 168740100 + 1061912569 = 12990^2 + 32587^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230652669 - 2⁵ = 1230652637 is a prime.

It is a super-2 number, since 2×1230652669² = 3029011983433647122, 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 (1230652639) 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, 627 + ... + 49615.

It is an arithmetic number, because the mean of its divisors is an integer number (307681695).

Almost surely, 2^1230652669 is an apocalyptic number.

It is an amenable number.

1230652669 is a deficient number, since it is larger than the sum of its proper divisors (74111).

1230652669 is an equidigital number, since it uses as much as digits as its factorization.

1230652669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74110.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1230652669 is about 35080.6594721365. The cubic root of 1230652669 is about 1071.6307474280.

It can be divided in two parts, 1230652 and 669, that added together give a palindrome (1231321).

The spelling of 1230652669 in words is "one billion, two hundred thirty million, six hundred fifty-two thousand, six hundred sixty-nine".