1146687478 has 8 divisors (see below), whose sum is σ = 1725562800. Its totient is φ = 571499880.

The previous prime is 1146687473. The next prime is 1146687497. The reversal of 1146687478 is 8747866411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146687473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921153 + ... + 922396.

It is an arithmetic number, because the mean of its divisors is an integer number (215695350).

Almost surely, 2^1146687478 is an apocalyptic number.

1146687478 is a deficient number, since it is larger than the sum of its proper divisors (578875322).

1146687478 is a wasteful number, since it uses less digits than its factorization.

1146687478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843862.

The product of its digits is 1806336, while the sum is 52.

The square root of 1146687478 is about 33862.7742218502. The cubic root of 1146687478 is about 1046.6826452770.

The spelling of 1146687478 in words is "one billion, one hundred forty-six million, six hundred eighty-seven thousand, four hundred seventy-eight".