1151001156 has 12 divisors (see below), whose sum is σ = 2685669392. Its totient is φ = 383667048.

The previous prime is 1151001119. The next prime is 1151001161. The reversal of 1151001156 is 6511001511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1151001156² = 2649607322226672672, which contains 22 as substring.

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, 47958370 + ... + 47958393.

Almost surely, 2^1151001156 is an apocalyptic number.

It is an amenable number.

1151001156 is an abundant number, since it is smaller than the sum of its proper divisors (1534668236).

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

1151001156 is a wasteful number, since it uses less digits than its factorization.

1151001156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95916770 (or 95916768 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 21.

The square root of 1151001156 is about 33926.4079442549. The cubic root of 1151001156 is about 1047.9934941713.

Adding to 1151001156 its reverse (6511001511), we get a palindrome (7662002667).

The spelling of 1151001156 in words is "one billion, one hundred fifty-one million, one thousand, one hundred fifty-six".