1540145201 has 4 divisors (see below), whose sum is σ = 1760165952. Its totient is φ = 1320124452.

The previous prime is 1540145153. The next prime is 1540145213. The reversal of 1540145201 is 1025410451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1540145201 - 2¹⁴ = 1540128817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540145221) 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, 110010365 + ... + 110010378.

It is an arithmetic number, because the mean of its divisors is an integer number (440041488).

Almost surely, 2^1540145201 is an apocalyptic number.

It is an amenable number.

1540145201 is a deficient number, since it is larger than the sum of its proper divisors (220020751).

1540145201 is an equidigital number, since it uses as much as digits as its factorization.

1540145201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220020750.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1540145201 is about 39244.6837291371. The cubic root of 1540145201 is about 1154.8366431262.

Adding to 1540145201 its reverse (1025410451), we get a palindrome (2565555652).

The spelling of 1540145201 in words is "one billion, five hundred forty million, one hundred forty-five thousand, two hundred one".