61855194 has 16 divisors (see below), whose sum is σ = 127054368. Its totient is φ = 20061072.

The previous prime is 61855193. The next prime is 61855201. The reversal of 61855194 is 49155816.

It is a super-4 number, since 4×61855194⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (61855193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139092 + ... + 139535.

It is an arithmetic number, because the mean of its divisors is an integer number (7940898).

Almost surely, 2^61855194 is an apocalyptic number.

61855194 is an abundant number, since it is smaller than the sum of its proper divisors (65199174).

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

61855194 is a wasteful number, since it uses less digits than its factorization.

61855194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278669.

The product of its digits is 43200, while the sum is 39.

The square root of 61855194 is about 7864.8073085105. The cubic root of 61855194 is about 395.4807882655.

The spelling of 61855194 in words is "sixty-one million, eight hundred fifty-five thousand, one hundred ninety-four".