2921342371949 has 2 divisors, whose sum is σ = 2921342371950. Its totient is φ = 2921342371948.

The previous prime is 2921342371943. The next prime is 2921342371957. The reversal of 2921342371949 is 9491732431292.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1815675400900 + 1105666971049 = 1347470^2 + 1051507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2921342371949 - 2⁴ = 2921342371933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2921342371894 and 2921342371903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2921342371943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1460671185974 + 1460671185975.

It is an arithmetic number, because the mean of its divisors is an integer number (1460671185975).

Almost surely, 2^{2921342371949} is an apocalyptic number.

It is an amenable number.

2921342371949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2921342371949 is an equidigital number, since it uses as much as digits as its factorization.

2921342371949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 56.

The spelling of 2921342371949 in words is "two trillion, nine hundred twenty-one billion, three hundred forty-two million, three hundred seventy-one thousand, nine hundred forty-nine".