1974405888 has 576 divisors, whose sum is σ = 7453895680. Its totient is φ = 501645312.

The previous prime is 1974405809. The next prime is 1974405889. The reversal of 1974405888 is 8885044791.

1974405888 is a `hidden beast` number, since 19 + 7 + 4 + 40 + 588 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×1974405888² = 7796557221138137088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1974405889) 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, 27046620 + ... + 27046692.

Almost surely, 2^1974405888 is an apocalyptic number.

1974405888 is a gapful number since it is divisible by the number (18) 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 1974405888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3726947840).

1974405888 is an abundant number, since it is smaller than the sum of its proper divisors (5479489792).

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

1974405888 is a wasteful number, since it uses less digits than its factorization.

1974405888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The square root of 1974405888 is about 44434.2873015873. The cubic root of 1974405888 is about 1254.5235331451.

The spelling of 1974405888 in words is "one billion, nine hundred seventy-four million, four hundred five thousand, eight hundred eighty-eight".