121613364 has 18 divisors (see below), whose sum is σ = 307411650. Its totient is φ = 40537776.

The previous prime is 121613363. The next prime is 121613377. The reversal of 121613364 is 463316121.

121613364 is a `hidden beast` number, since 12 + 1 + 613 + 36 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 1710864 = 10950^2 + 1308^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121613363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1689039 + ... + 1689110.

It is an arithmetic number, because the mean of its divisors is an integer number (17078425).

Almost surely, 2^121613364 is an apocalyptic number.

It is an amenable number.

121613364 is an abundant number, since it is smaller than the sum of its proper divisors (185798286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121613364 is a wasteful number, since it uses less digits than its factorization.

121613364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378159 (or 3378154 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 121613364 is about 11027.8449390622. The cubic root of 121613364 is about 495.4430804712.

Adding to 121613364 its reverse (463316121), we get a palindrome (584929485).

The spelling of 121613364 in words is "one hundred twenty-one million, six hundred thirteen thousand, three hundred sixty-four".