1245488986 has 16 divisors (see below), whose sum is σ = 2260719936. Its totient is φ = 502382016.

The previous prime is 1245488971. The next prime is 1245489017. The reversal of 1245488986 is 6898845421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2616336 + ... + 2616811.

It is an arithmetic number, because the mean of its divisors is an integer number (141294996).

Almost surely, 2^1245488986 is an apocalyptic number.

1245488986 is a deficient number, since it is larger than the sum of its proper divisors (1015230950).

1245488986 is a wasteful number, since it uses less digits than its factorization.

1245488986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233173.

The product of its digits is 4423680, while the sum is 55.

The square root of 1245488986 is about 35291.4860270859. The cubic root of 1245488986 is about 1075.9199584145.

The spelling of 1245488986 in words is "one billion, two hundred forty-five million, four hundred eighty-eight thousand, nine hundred eighty-six".