1898615040 has 576 divisors, whose sum is σ = 7516164096. Its totient is φ = 399015936.

The previous prime is 1898615027. The next prime is 1898615041. The reversal of 1898615040 is 405168981.

It is a super-2 number, since 2×1898615040² = 7209478140228403200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1898614983 and 1898615001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898615041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22874839 + ... + 22874921.

It is an arithmetic number, because the mean of its divisors is an integer number (13048896).

Almost surely, 2^1898615040 is an apocalyptic number.

1898615040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1898615040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3758082048).

1898615040 is an abundant number, since it is smaller than the sum of its proper divisors (5617549056).

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

1898615040 is a wasteful number, since it uses less digits than its factorization.

1898615040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1898615040 is about 43573.0999585754. The cubic root of 1898615040 is about 1238.2613162542.

The spelling of 1898615040 in words is "one billion, eight hundred ninety-eight million, six hundred fifteen thousand, forty".