1205011045 has 32 divisors (see below), whose sum is σ = 1720051200. Its totient is φ = 792911616.

The previous prime is 1205011007. The next prime is 1205011109. The reversal of 1205011045 is 5401105021.

It is not a de Polignac number, because 1205011045 - 2¹³ = 1205002853 is a prime.

It is a super-3 number, since 3×1205011045³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165951 + ... + 173059.

It is an arithmetic number, because the mean of its divisors is an integer number (53751600).

Almost surely, 2^1205011045 is an apocalyptic number.

It is an amenable number.

1205011045 is a deficient number, since it is larger than the sum of its proper divisors (515040155).

1205011045 is a wasteful number, since it uses less digits than its factorization.

1205011045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1205011045 is about 34713.2690048056. The cubic root of 1205011045 is about 1064.1356899730.

Adding to 1205011045 its reverse (5401105021), we get a palindrome (6606116066).

The spelling of 1205011045 in words is "one billion, two hundred five million, eleven thousand, forty-five".