7213893506 has 8 divisors (see below), whose sum is σ = 10822208124. Its totient is φ = 3606490800.

The previous prime is 7213893493. The next prime is 7213893541. The reversal of 7213893506 is 6053983127.

7213893506 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7191888025 + 22005481 = 84805^2 + 4691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207845 + ... + 240056.

Almost surely, 2^7213893506 is an apocalyptic number.

7213893506 is a deficient number, since it is larger than the sum of its proper divisors (3608314618).

7213893506 is a wasteful number, since it uses less digits than its factorization.

7213893506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455956.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 7213893506 is about 84934.6425553201. The cubic root of 7213893506 is about 1932.2200112159.

The spelling of 7213893506 in words is "seven billion, two hundred thirteen million, eight hundred ninety-three thousand, five hundred six".