741891636 has 78 divisors (see below), whose sum is σ = 1953044450. Its totient is φ = 246588624.

The previous prime is 741891589. The next prime is 741891637. The reversal of 741891636 is 636198147.

It is a happy number.

741891636 is a `hidden beast` number, since 7 + 4 + 1 + 8 + 9 + 1 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 688747536 + 53144100 = 26244^2 + 7290^2 .

It is a junction number, because it is equal to n+sod(n) for n = 741891591 and 741891600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (741891637) by changing a digit.

It is a polite number, since it can be written in 25 ways as a sum of consecutive naturals, for example, 2125590 + ... + 2125938.

Almost surely, 2^741891636 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 741891636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976522225).

741891636 is an abundant number, since it is smaller than the sum of its proper divisors (1211152814).

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

741891636 is an frugal number, since it uses more digits than its factorization.

741891636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 354 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 741891636 is about 27237.6877873288. The cubic root of 741891636 is about 905.2742312725.

The spelling of 741891636 in words is "seven hundred forty-one million, eight hundred ninety-one thousand, six hundred thirty-six".