1201164146 has 48 divisors (see below), whose sum is σ = 2270038680. Its totient is φ = 472469760.

The previous prime is 1201164113. The next prime is 1201164149. The reversal of 1201164146 is 6414611021.

It can be written as a sum of positive squares in 4 ways, for example, as 812877121 + 388287025 = 28511^2 + 19705^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1201164149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227990 + ... + 233198.

Almost surely, 2^1201164146 is an apocalyptic number.

1201164146 is a deficient number, since it is larger than the sum of its proper divisors (1068874534).

1201164146 is a wasteful number, since it uses less digits than its factorization.

1201164146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5419 (or 5412 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1201164146 is about 34657.8150782764. The cubic root of 1201164146 is about 1063.0020941536.

Adding to 1201164146 its reverse (6414611021), we get a palindrome (7615775167).

The spelling of 1201164146 in words is "one billion, two hundred one million, one hundred sixty-four thousand, one hundred forty-six".