1236461641 has 8 divisors (see below), whose sum is σ = 1273190184. Its totient is φ = 1200046080.

The previous prime is 1236461599. The next prime is 1236461647. The reversal of 1236461641 is 1461646321.

It can be written as a sum of positive squares in 4 ways, for example, as 106090000 + 1130371641 = 10300^2 + 33621^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1236461641 - 2⁹ = 1236461129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1236461597 and 1236461606.

It is not an unprimeable number, because it can be changed into a prime (1236461647) 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, 70216 + ... + 86041.

It is an arithmetic number, because the mean of its divisors is an integer number (159148773).

Almost surely, 2^1236461641 is an apocalyptic number.

It is an amenable number.

1236461641 is a deficient number, since it is larger than the sum of its proper divisors (36728543).

1236461641 is a wasteful number, since it uses less digits than its factorization.

1236461641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156491.

The product of its digits is 20736, while the sum is 34.

The square root of 1236461641 is about 35163.3565092981. The cubic root of 1236461641 is about 1073.3142183647.

It can be divided in two parts, 123 and 6461641, that added together give a square (6461764 = 2542²).

The spelling of 1236461641 in words is "one billion, two hundred thirty-six million, four hundred sixty-one thousand, six hundred forty-one".