1354378478 has 16 divisors (see below), whose sum is σ = 2047680000. Its totient is φ = 671838552.

The previous prime is 1354378469. The next prime is 1354378523. The reversal of 1354378478 is 8748734531.

It is a happy number.

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, 138143 + ... + 147621.

It is an arithmetic number, because the mean of its divisors is an integer number (127980000).

Almost surely, 2^1354378478 is an apocalyptic number.

1354378478 is a deficient number, since it is larger than the sum of its proper divisors (693301522).

1354378478 is a wasteful number, since it uses less digits than its factorization.

1354378478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10039.

The product of its digits is 2257920, while the sum is 50.

The square root of 1354378478 is about 36801.8814464696. The cubic root of 1354378478 is about 1106.4030083699.

The spelling of 1354378478 in words is "one billion, three hundred fifty-four million, three hundred seventy-eight thousand, four hundred seventy-eight".