400419740138 has 32 divisors (see below), whose sum is σ = 657077496768. Its totient is φ = 181496937600.

The previous prime is 400419740117. The next prime is 400419740159. The reversal of 400419740138 is 831047914004.

It is an interprime number because it is at equal distance from previous prime (400419740117) and next prime (400419740159).

It is a junction number, because it is equal to n+sod(n) for n = 400419740095 and 400419740104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16793381 + ... + 16817207.

It is an arithmetic number, because the mean of its divisors is an integer number (20533671774).

Almost surely, 2^400419740138 is an apocalyptic number.

400419740138 is a deficient number, since it is larger than the sum of its proper divisors (256657756630).

400419740138 is a wasteful number, since it uses less digits than its factorization.

400419740138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25958.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 400419740138 in words is "four hundred billion, four hundred nineteen million, seven hundred forty thousand, one hundred thirty-eight".