1245049949 has 24 divisors (see below), whose sum is σ = 1482278616. Its totient is φ = 1038787200.

The previous prime is 1245049937. The next prime is 1245049951. The reversal of 1245049949 is 9499405421.

It can be written as a sum of positive squares in 4 ways, for example, as 13741849 + 1231308100 = 3707^2 + 35090^2 .

It is not a de Polignac number, because 1245049949 - 2¹² = 1245045853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245049969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 282527 + ... + 286899.

It is an arithmetic number, because the mean of its divisors is an integer number (61761609).

Almost surely, 2^1245049949 is an apocalyptic number.

It is an amenable number.

1245049949 is a deficient number, since it is larger than the sum of its proper divisors (237228667).

1245049949 is a wasteful number, since it uses less digits than its factorization.

1245049949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589 (or 4578 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1245049949 is about 35285.2653242115. The cubic root of 1245049949 is about 1075.7935223478.

The spelling of 1245049949 in words is "one billion, two hundred forty-five million, forty-nine thousand, nine hundred forty-nine".