1187761134 has 64 divisors (see below), whose sum is σ = 2921812992. Its totient is φ = 314150400.

The previous prime is 1187761061. The next prime is 1187761139. The reversal of 1187761134 is 4311677811.

It is a super-2 number, since 2×1187761134² = 2821553022881931912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1187761092 and 1187761101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187761139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29919 + ... + 57189.

It is an arithmetic number, because the mean of its divisors is an integer number (45653328).

Almost surely, 2^1187761134 is an apocalyptic number.

1187761134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1187761134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1460906496).

1187761134 is an abundant number, since it is smaller than the sum of its proper divisors (1734051858).

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

1187761134 is a wasteful number, since it uses less digits than its factorization.

1187761134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27361.

The product of its digits is 28224, while the sum is 39.

The square root of 1187761134 is about 34463.9106022517. The cubic root of 1187761134 is about 1059.0335126593.

The spelling of 1187761134 in words is "one billion, one hundred eighty-seven million, seven hundred sixty-one thousand, one hundred thirty-four".