1434137778 has 16 divisors (see below), whose sum is σ = 3186972960. Its totient is φ = 478045908.

The previous prime is 1434137777. The next prime is 1434137819. The reversal of 1434137778 is 8777314341.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1434137777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13279000 + ... + 13279107.

It is an arithmetic number, because the mean of its divisors is an integer number (199185810).

Almost surely, 2^1434137778 is an apocalyptic number.

1434137778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1434137778 is an abundant number, since it is smaller than the sum of its proper divisors (1752835182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1434137778 is a wasteful number, since it uses less digits than its factorization.

1434137778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26558118 (or 26558112 counting only the distinct ones).

The product of its digits is 395136, while the sum is 45.

The square root of 1434137778 is about 37870.0115922876. The cubic root of 1434137778 is about 1127.7087721462.

The spelling of 1434137778 in words is "one billion, four hundred thirty-four million, one hundred thirty-seven thousand, seven hundred seventy-eight".