61882019 has 4 divisors (see below), whose sum is σ = 63554544. Its totient is φ = 60209496.

The previous prime is 61882013. The next prime is 61882039. The reversal of 61882019 is 91028816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61882019 - 2⁴ = 61882003 is a prime.

It is a super-2 number, since 2×61882019² = 7658768551032722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61882019.

It is not an unprimeable number, because it can be changed into a prime (61882013) 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, 836207 + ... + 836280.

It is an arithmetic number, because the mean of its divisors is an integer number (15888636).

Almost surely, 2^61882019 is an apocalyptic number.

61882019 is a deficient number, since it is larger than the sum of its proper divisors (1672525).

61882019 is a wasteful number, since it uses less digits than its factorization.

61882019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672524.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 61882019 is about 7866.5125055516. The cubic root of 61882019 is about 395.5379499375.

The spelling of 61882019 in words is "sixty-one million, eight hundred eighty-two thousand, nineteen".