2951221493 has 8 divisors (see below), whose sum is σ = 3388962720. Its totient is φ = 2541721680.

The previous prime is 2951221457. The next prime is 2951221501. The reversal of 2951221493 is 3941221592.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2951221493 - 2¹⁴ = 2951205109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2951241493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7060130 + ... + 7060547.

It is an arithmetic number, because the mean of its divisors is an integer number (423620340).

Almost surely, 2^2951221493 is an apocalyptic number.

It is an amenable number.

2951221493 is a deficient number, since it is larger than the sum of its proper divisors (437741227).

2951221493 is a wasteful number, since it uses less digits than its factorization.

2951221493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14120707.

The product of its digits is 38880, while the sum is 38.

The square root of 2951221493 is about 54325.1460467434. The cubic root of 2951221493 is about 1434.3900644943.

Subtracting 2951221493 from its reverse (3941221592), we obtain a palindrome (990000099).

It can be divided in two parts, 295 and 1221493, that multiplied together give a triangular number (360340435 = T₂₆₈₄₅).

The spelling of 2951221493 in words is "two billion, nine hundred fifty-one million, two hundred twenty-one thousand, four hundred ninety-three".