7421194493 has 2 divisors, whose sum is σ = 7421194494. Its totient is φ = 7421194492.

The previous prime is 7421194489. The next prime is 7421194507. The reversal of 7421194493 is 3944911247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5867100409 + 1554094084 = 76597^2 + 39422^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421194493 - 2² = 7421194489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421194993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710597246 + 3710597247.

It is an arithmetic number, because the mean of its divisors is an integer number (3710597247).

Almost surely, 2^7421194493 is an apocalyptic number.

It is an amenable number.

7421194493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421194493 is an equidigital number, since it uses as much as digits as its factorization.

7421194493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 7421194493 is about 86146.3550766949. The cubic root of 7421194493 is about 1950.5538197274.

The spelling of 7421194493 in words is "seven billion, four hundred twenty-one million, one hundred ninety-four thousand, four hundred ninety-three".