1150185420 has 60 divisors (see below), whose sum is σ = 3608179344. Its totient is φ = 306715680.

The previous prime is 1150185409. The next prime is 1150185431. The reversal of 1150185420 is 245810511.

1150185420 is a `hidden beast` number, since 11 + 50 + 185 + 420 = 666.

It is an interprime number because it is at equal distance from previous prime (1150185409) and next prime (1150185431).

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 353376 + ... + 356615.

Almost surely, 2^1150185420 is an apocalyptic number.

1150185420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1150185420 is an abundant number, since it is smaller than the sum of its proper divisors (2457993924).

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

1150185420 is a wasteful number, since it uses less digits than its factorization.

1150185420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710012 (or 710001 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1150185420 is about 33914.3836741876. The cubic root of 1150185420 is about 1047.7458581448.

Adding to 1150185420 its reverse (245810511), we get a palindrome (1395995931).

The spelling of 1150185420 in words is "one billion, one hundred fifty million, one hundred eighty-five thousand, four hundred twenty".