1249854992 has 20 divisors (see below), whose sum is σ = 2505098220. Its totient is φ = 603378048.

The previous prime is 1249854959. The next prime is 1249855001. The reversal of 1249854992 is 2994589421.

It can be written as a sum of positive squares in 2 ways, for example, as 1019908096 + 229946896 = 31936^2 + 15164^2 .

It is a super-3 number, since 3×1249854992³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1346363 + ... + 1347290.

It is an arithmetic number, because the mean of its divisors is an integer number (125254911).

Almost surely, 2^1249854992 is an apocalyptic number.

It is an amenable number.

1249854992 is an abundant number, since it is smaller than the sum of its proper divisors (1255243228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249854992 is a wasteful number, since it uses less digits than its factorization.

1249854992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693690 (or 2693684 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 1249854992 is about 35353.2882770472. The cubic root of 1249854992 is about 1077.1756887030.

The spelling of 1249854992 in words is "one billion, two hundred forty-nine million, eight hundred fifty-four thousand, nine hundred ninety-two".