2349451840 has 224 divisors, whose sum is σ = 6280830720. Its totient is φ = 832905216.

The previous prime is 2349451831. The next prime is 2349451847. The reversal of 2349451840 is 481549432.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2349451793 and 2349451802.

It is not an unprimeable number, because it can be changed into a prime (2349451847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7411362 + ... + 7411678.

Almost surely, 2^2349451840 is an apocalyptic number.

2349451840 is a gapful number since it is divisible by the number (20) 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 2349451840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3140415360).

2349451840 is an abundant number, since it is smaller than the sum of its proper divisors (3931378880).

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

2349451840 is a wasteful number, since it uses less digits than its factorization.

2349451840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2349451840 is about 48471.1444057183. The cubic root of 2349451840 is about 1329.3995141028.

The spelling of 2349451840 in words is "two billion, three hundred forty-nine million, four hundred fifty-one thousand, eight hundred forty".