4137738121 has 4 divisors (see below), whose sum is σ = 4513896144. Its totient is φ = 3761580100.

The previous prime is 4137738029. The next prime is 4137738127. The reversal of 4137738121 is 1218377314.

It is a happy number.

4137738121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4137738121 - 2⁷ = 4137737993 is a prime.

It is a super-2 number, since 2×4137738121² = 34241753515953221282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4137738127) 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, 188078995 + ... + 188079016.

It is an arithmetic number, because the mean of its divisors is an integer number (1128474036).

Almost surely, 2^4137738121 is an apocalyptic number.

It is an amenable number.

4137738121 is a deficient number, since it is larger than the sum of its proper divisors (376158023).

4137738121 is a wasteful number, since it uses less digits than its factorization.

4137738121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376158022.

The product of its digits is 28224, while the sum is 37.

The square root of 4137738121 is about 64325.2525918088. The cubic root of 4137738121 is about 1605.4162953232.

The spelling of 4137738121 in words is "four billion, one hundred thirty-seven million, seven hundred thirty-eight thousand, one hundred twenty-one".