1894155480 has 192 divisors, whose sum is σ = 7053134400. Its totient is φ = 431861760.

The previous prime is 1894155463. The next prime is 1894155481. The reversal of 1894155480 is 845514981.

It is a happy number.

1894155480 is a `hidden beast` number, since 1 + 8 + 94 + 1 + 554 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894155481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1433220 + ... + 1434540.

It is an arithmetic number, because the mean of its divisors is an integer number (36735075).

Almost surely, 2^1894155480 is an apocalyptic number.

1894155480 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 1894155480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3526567200).

1894155480 is an abundant number, since it is smaller than the sum of its proper divisors (5158978920).

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

1894155480 is a wasteful number, since it uses less digits than its factorization.

1894155480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 1894155480 is about 43521.8965579397. The cubic root of 1894155480 is about 1237.2910599188.

The spelling of 1894155480 in words is "one billion, eight hundred ninety-four million, one hundred fifty-five thousand, four hundred eighty".