1201511088 has 60 divisors (see below), whose sum is σ = 3408654600. Its totient is φ = 395013888.

The previous prime is 1201511081. The next prime is 1201511137. The reversal of 1201511088 is 8801151021.

It is not an unprimeable number, because it can be changed into a prime (1201511081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46638 + ... + 67661.

It is an arithmetic number, because the mean of its divisors is an integer number (56810910).

Almost surely, 2^1201511088 is an apocalyptic number.

1201511088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1201511088 is an abundant number, since it is smaller than the sum of its proper divisors (2207143512).

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

1201511088 is a wasteful number, since it uses less digits than its factorization.

1201511088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114386 (or 114377 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The square root of 1201511088 is about 34662.8199660674. The cubic root of 1201511088 is about 1063.1044294788.

The spelling of 1201511088 in words is "one billion, two hundred one million, five hundred eleven thousand, eighty-eight".