7452181404 has 144 divisors (see below), whose sum is σ = 20261168928. Its totient is φ = 2301272064.

The previous prime is 7452181351. The next prime is 7452181409. The reversal of 7452181404 is 4041812547.

It is a happy number.

7452181404 is a `hidden beast` number, since 74 + 5 + 2 + 181 + 404 = 666.

It is a super-2 number, since 2×7452181404² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7452181409) 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, 13623459 + ... + 13624005.

It is an arithmetic number, because the mean of its divisors is an integer number (140702562).

Almost surely, 2^7452181404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7452181404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10130584464).

7452181404 is an abundant number, since it is smaller than the sum of its proper divisors (12808987524).

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

7452181404 is a wasteful number, since it uses less digits than its factorization.

7452181404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 7452181404 is about 86326.0181173671. The cubic root of 7452181404 is about 1953.2648706398.

The spelling of 7452181404 in words is "seven billion, four hundred fifty-two million, one hundred eighty-one thousand, four hundred four".