1151203520 has 28 divisors (see below), whose sum is σ = 2741304144. Its totient is φ = 460481280.

The previous prime is 1151203481. The next prime is 1151203541. The reversal of 1151203520 is 253021511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1151203492 and 1151203501.

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, 1798436 + ... + 1799075.

Almost surely, 2^1151203520 is an apocalyptic number.

1151203520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151203520 is an abundant number, since it is smaller than the sum of its proper divisors (1590100624).

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

1151203520 is an equidigital number, since it uses as much as digits as its factorization.

1151203520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597528 (or 3597518 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1151203520 is about 33929.3902096693. The cubic root of 1151203520 is about 1048.0549084531.

The spelling of 1151203520 in words is "one billion, one hundred fifty-one million, two hundred three thousand, five hundred twenty".