1161201450 has 96 divisors (see below), whose sum is σ = 2950525440. Its totient is φ = 302142400.

The previous prime is 1161201427. The next prime is 1161201463. The reversal of 1161201450 is 541021611.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1139041 + ... + 1140059.

It is an arithmetic number, because the mean of its divisors is an integer number (30734640).

Almost surely, 2^1161201450 is an apocalyptic number.

1161201450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161201450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1475262720).

1161201450 is an abundant number, since it is smaller than the sum of its proper divisors (1789323990).

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

1161201450 is a wasteful number, since it uses less digits than its factorization.

1161201450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1161201450 is about 34076.4060604988. The cubic root of 1161201450 is about 1051.0802035358.

The spelling of 1161201450 in words is "one billion, one hundred sixty-one million, two hundred one thousand, four hundred fifty".