1423678774 has 16 divisors (see below), whose sum is σ = 2442534048. Its totient is φ = 609662592.

The previous prime is 1423678741. The next prime is 1423678783. The reversal of 1423678774 is 4778763241.

It is a happy number.

It is a super-2 number, since 2×1423678774² = 4053722503076286152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21939 + ... + 57694.

It is an arithmetic number, because the mean of its divisors is an integer number (152658378).

Almost surely, 2^1423678774 is an apocalyptic number.

1423678774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1423678774 is a deficient number, since it is larger than the sum of its proper divisors (1018855274).

1423678774 is a wasteful number, since it uses less digits than its factorization.

1423678774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80919.

The product of its digits is 1580544, while the sum is 49.

The square root of 1423678774 is about 37731.6680521813. The cubic root of 1423678774 is about 1124.9606633818.

The spelling of 1423678774 in words is "one billion, four hundred twenty-three million, six hundred seventy-eight thousand, seven hundred seventy-four".