1201064149 has 4 divisors (see below), whose sum is σ = 1201155660. Its totient is φ = 1200972640.

The previous prime is 1201064129. The next prime is 1201064171. The reversal of 1201064149 is 9414601021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9414601021 = 7 ⋅1344943003.

It can be written as a sum of positive squares in 2 ways, for example, as 1179441649 + 21622500 = 34343^2 + 4650^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201064149 - 2⁷ = 1201064021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201064129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21934 + ... + 53695.

It is an arithmetic number, because the mean of its divisors is an integer number (300288915).

Almost surely, 2^1201064149 is an apocalyptic number.

It is an amenable number.

1201064149 is a deficient number, since it is larger than the sum of its proper divisors (91511).

1201064149 is an equidigital number, since it uses as much as digits as its factorization.

1201064149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91510.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1201064149 is about 34656.3724154736. The cubic root of 1201064149 is about 1062.9725950019.

The spelling of 1201064149 in words is "one billion, two hundred one million, sixty-four thousand, one hundred forty-nine".