340744381837 has 2 divisors, whose sum is σ = 340744381838. Its totient is φ = 340744381836.

The previous prime is 340744381811. The next prime is 340744381877. The reversal of 340744381837 is 738183447043.

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., 201265287876 + 139479093961 = 448626^2 + 373469^2 .

It is a cyclic number.

It is not a de Polignac number, because 340744381837 - 2²³ = 340735993229 is a prime.

It is a super-2 number, since 2×340744381837² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340744381877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170372190918 + 170372190919.

It is an arithmetic number, because the mean of its divisors is an integer number (170372190919).

Almost surely, 2^340744381837 is an apocalyptic number.

It is an amenable number.

340744381837 is a deficient number, since it is larger than the sum of its proper divisors (1).

340744381837 is an equidigital number, since it uses as much as digits as its factorization.

340744381837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 52.

The spelling of 340744381837 in words is "three hundred forty billion, seven hundred forty-four million, three hundred eighty-one thousand, eight hundred thirty-seven".