340744381838 has 32 divisors (see below), whose sum is σ = 587856019968. Its totient is φ = 145105380000.

The previous prime is 340744381837. The next prime is 340744381877. The reversal of 340744381838 is 838183447043.

It is a super-2 number, since 2×340744381838² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 340744381838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340744381837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1364231 + ... + 1594557.

It is an arithmetic number, because the mean of its divisors is an integer number (18370500624).

Almost surely, 2^340744381838 is an apocalyptic number.

340744381838 is a deficient number, since it is larger than the sum of its proper divisors (247111638130).

340744381838 is a wasteful number, since it uses less digits than its factorization.

340744381838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231008.

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 340744381838 in words is "three hundred forty billion, seven hundred forty-four million, three hundred eighty-one thousand, eight hundred thirty-eight".