2452181394 has 16 divisors (see below), whose sum is σ = 5281621632. Its totient is φ = 754517328.

The previous prime is 2452181387. The next prime is 2452181399. The reversal of 2452181394 is 4931812542.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2452181399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15719034 + ... + 15719189.

It is an arithmetic number, because the mean of its divisors is an integer number (330101352).

Almost surely, 2^2452181394 is an apocalyptic number.

2452181394 is an abundant number, since it is smaller than the sum of its proper divisors (2829440238).

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

2452181394 is a wasteful number, since it uses less digits than its factorization.

2452181394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31438241.

The product of its digits is 69120, while the sum is 39.

The square root of 2452181394 is about 49519.5051873502. The cubic root of 2452181394 is about 1348.4997314336.

The spelling of 2452181394 in words is "two billion, four hundred fifty-two million, one hundred eighty-one thousand, three hundred ninety-four".