1151511678 has 48 divisors (see below), whose sum is σ = 2582900736. Its totient is φ = 370377360.

The previous prime is 1151511653. The next prime is 1151511679. The reversal of 1151511678 is 8761151511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151511679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201975 + ... + 207597.

It is an arithmetic number, because the mean of its divisors is an integer number (53810432).

Almost surely, 2^1151511678 is an apocalyptic number.

1151511678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151511678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291450368).

1151511678 is an abundant number, since it is smaller than the sum of its proper divisors (1431389058).

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

1151511678 is a wasteful number, since it uses less digits than its factorization.

1151511678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6029 (or 6026 counting only the distinct ones).

The product of its digits is 8400, while the sum is 36.

The square root of 1151511678 is about 33933.9310720111. The cubic root of 1151511678 is about 1048.1484157219.

The spelling of 1151511678 in words is "one billion, one hundred fifty-one million, five hundred eleven thousand, six hundred seventy-eight".