1974918240 has 192 divisors, whose sum is σ = 7135672320. Its totient is φ = 509621760.

The previous prime is 1974918227. The next prime is 1974918293. The reversal of 1974918240 is 428194791.

It is a happy number.

It is a super-3 number, since 3×1974918240³ (a number of 29 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126547 + ... + 141293.

It is an arithmetic number, because the mean of its divisors is an integer number (37164960).

Almost surely, 2^1974918240 is an apocalyptic number.

1974918240 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 1974918240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3567836160).

1974918240 is an abundant number, since it is smaller than the sum of its proper divisors (5160754080).

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

1974918240 is a wasteful number, since it uses less digits than its factorization.

1974918240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802 (or 14788 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1974918240 is about 44440.0522051899. The cubic root of 1974918240 is about 1254.6320387054.

The spelling of 1974918240 in words is "one billion, nine hundred seventy-four million, nine hundred eighteen thousand, two hundred forty".