1361641401 has 16 divisors (see below), whose sum is σ = 2135908800. Its totient is φ = 854362944.

The previous prime is 1361641399. The next prime is 1361641433. The reversal of 1361641401 is 1041461631.

1361641401 is a `hidden beast` number, since 1 + 3 + 616 + 4 + 1 + 40 + 1 = 666.

It is not a de Polignac number, because 1361641401 - 2¹ = 1361641399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1361641301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482811 + ... + 1483728.

It is an arithmetic number, because the mean of its divisors is an integer number (133494300).

Almost surely, 2^1361641401 is an apocalyptic number.

It is an amenable number.

1361641401 is a deficient number, since it is larger than the sum of its proper divisors (774267399).

1361641401 is a wasteful number, since it uses less digits than its factorization.

1361641401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966565 (or 2966559 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1361641401 is about 36900.4254853518. The cubic root of 1361641401 is about 1108.3771976735.

The spelling of 1361641401 in words is "one billion, three hundred sixty-one million, six hundred forty-one thousand, four hundred one".