1253126690 has 16 divisors (see below), whose sum is σ = 2303620992. Its totient is φ = 490585584.

The previous prime is 1253126689. The next prime is 1253126713. The reversal of 1253126690 is 966213521.

It is a super-2 number, since 2×1253126690² = 3140653002380712200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1253126690.

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, 1332644 + ... + 1333583.

It is an arithmetic number, because the mean of its divisors is an integer number (143976312).

Almost surely, 2^1253126690 is an apocalyptic number.

1253126690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1253126690 is a deficient number, since it is larger than the sum of its proper divisors (1050494302).

1253126690 is a wasteful number, since it uses less digits than its factorization.

1253126690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666281.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1253126690 is about 35399.5295166475. The cubic root of 1253126690 is about 1078.1147637647.

The spelling of 1253126690 in words is "one billion, two hundred fifty-three million, one hundred twenty-six thousand, six hundred ninety".