1361621433 has 8 divisors (see below), whose sum is σ = 1815736000. Its totient is φ = 907627248.

The previous prime is 1361621431. The next prime is 1361621441. The reversal of 1361621433 is 3341261631.

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

It is not a de Polignac number, because 1361621433 - 2¹ = 1361621431 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1361621433.

It is not an unprimeable number, because it can be changed into a prime (1361621431) 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, 843 + ... + 52191.

It is an arithmetic number, because the mean of its divisors is an integer number (226967000).

Almost surely, 2^1361621433 is an apocalyptic number.

It is an amenable number.

1361621433 is a deficient number, since it is larger than the sum of its proper divisors (454114567).

1361621433 is an equidigital number, since it uses as much as digits as its factorization.

1361621433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60191.

The product of its digits is 7776, while the sum is 30.

The square root of 1361621433 is about 36900.1549183740. The cubic root of 1361621433 is about 1108.3717796577.

The spelling of 1361621433 in words is "one billion, three hundred sixty-one million, six hundred twenty-one thousand, four hundred thirty-three".