61803838 has 16 divisors (see below), whose sum is σ = 95431680. Its totient is φ = 29997216.

The previous prime is 61803821. The next prime is 61803839. The reversal of 61803838 is 83830816.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 61803797 and 61803806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61803839) 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, 47683 + ... + 48961.

It is an arithmetic number, because the mean of its divisors is an integer number (5964480).

Almost surely, 2^61803838 is an apocalyptic number.

61803838 is a deficient number, since it is larger than the sum of its proper divisors (33627842).

61803838 is a wasteful number, since it uses less digits than its factorization.

61803838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 61803838 is about 7861.5417063067. The cubic root of 61803838 is about 395.3713071069.

The spelling of 61803838 in words is "sixty-one million, eight hundred three thousand, eight hundred thirty-eight".