1151178638 has 8 divisors (see below), whose sum is σ = 1727638632. Its totient is φ = 575299096.

The previous prime is 1151178571. The next prime is 1151178667. The reversal of 1151178638 is 8368711511.

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

It is a junction number, because it is equal to n+sod(n) for n = 1151178595 and 1151178604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140120 + ... + 148107.

It is an arithmetic number, because the mean of its divisors is an integer number (215954829).

Almost surely, 2^1151178638 is an apocalyptic number.

1151178638 is a deficient number, since it is larger than the sum of its proper divisors (576459994).

1151178638 is a wasteful number, since it uses less digits than its factorization.

1151178638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290226.

The product of its digits is 40320, while the sum is 41.

The square root of 1151178638 is about 33929.0235344314. The cubic root of 1151178638 is about 1048.0473575466.

The spelling of 1151178638 in words is "one billion, one hundred fifty-one million, one hundred seventy-eight thousand, six hundred thirty-eight".