18961050 has 48 divisors (see below), whose sum is σ = 49505760. Its totient is φ = 4789440.

The previous prime is 18961049. The next prime is 18961073. The reversal of 18961050 is 5016981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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

It is a junction number, because it is equal to n+sod(n) for n = 18960999 and 18961017.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477 + ... + 6176.

It is an arithmetic number, because the mean of its divisors is an integer number (1031370).

Almost surely, 2^18961050 is an apocalyptic number.

18961050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18961050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24752880).

18961050 is an abundant number, since it is smaller than the sum of its proper divisors (30544710).

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

18961050 is a wasteful number, since it uses less digits than its factorization.

18961050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687 (or 6682 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 18961050 is about 4354.4287799894. The cubic root of 18961050 is about 266.6576993512.

The spelling of 18961050 in words is "eighteen million, nine hundred sixty-one thousand, fifty".