61892129 has 8 divisors (see below), whose sum is σ = 67163712. Its totient is φ = 56693520.

The previous prime is 61892123. The next prime is 61892141. The reversal of 61892129 is 92129816.

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

It is not a de Polignac number, because 61892129 - 2²⁰ = 60843553 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61892092 and 61892101.

It is not an unprimeable number, because it can be changed into a prime (61892123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16469 + ... + 19874.

It is an arithmetic number, because the mean of its divisors is an integer number (8395464).

Almost surely, 2^61892129 is an apocalyptic number.

It is an amenable number.

61892129 is a deficient number, since it is larger than the sum of its proper divisors (5271583).

61892129 is a wasteful number, since it uses less digits than its factorization.

61892129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36487.

The product of its digits is 15552, while the sum is 38.

The square root of 61892129 is about 7867.1550766462. The cubic root of 61892129 is about 395.5594891557.

The spelling of 61892129 in words is "sixty-one million, eight hundred ninety-two thousand, one hundred twenty-nine".