1438151746 has 16 divisors (see below), whose sum is σ = 2176805376. Its totient is φ = 712568736.

The previous prime is 1438151713. The next prime is 1438151747. The reversal of 1438151746 is 6471518341.

It is a junction number, because it is equal to n+sod(n) for n = 1438151699 and 1438151708.

It is not an unprimeable number, because it can be changed into a prime (1438151747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161995 + ... + 170641.

It is an arithmetic number, because the mean of its divisors is an integer number (136050336).

Almost surely, 2^1438151746 is an apocalyptic number.

1438151746 is a deficient number, since it is larger than the sum of its proper divisors (738653630).

1438151746 is a wasteful number, since it uses less digits than its factorization.

1438151746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393.

The product of its digits is 80640, while the sum is 40.

The square root of 1438151746 is about 37922.9712179834. The cubic root of 1438151746 is about 1128.7598962516.

The spelling of 1438151746 in words is "one billion, four hundred thirty-eight million, one hundred fifty-one thousand, seven hundred forty-six".