7219249641 has 6 divisors (see below), whose sum is σ = 10427805050. Its totient is φ = 4812833088.

The previous prime is 7219249607. The next prime is 7219249657. The reversal of 7219249641 is 1469429127.

7219249641 is a `hidden beast` number, since 72 + 1 + 92 + 496 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7090313616 + 128936025 = 84204^2 + 11355^2 .

It is not a de Polignac number, because 7219249641 - 2⁶ = 7219249577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7219249601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401069416 + ... + 401069433.

Almost surely, 2^7219249641 is an apocalyptic number.

It is an amenable number.

7219249641 is a deficient number, since it is larger than the sum of its proper divisors (3208555409).

7219249641 is a wasteful number, since it uses less digits than its factorization.

7219249641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802138855 (or 802138852 counting only the distinct ones).

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

The square root of 7219249641 is about 84966.1676257085. The cubic root of 7219249641 is about 1932.6981012112.

The spelling of 7219249641 in words is "seven billion, two hundred nineteen million, two hundred forty-nine thousand, six hundred forty-one".