1249156070 has 16 divisors (see below), whose sum is σ = 2258303760. Its totient is φ = 497479584.

The previous prime is 1249156049. The next prime is 1249156079. The reversal of 1249156070 is 706519421.

It is a self number, because there is not a number n which added to its sum of digits gives 1249156070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249156079) 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 7 ways as a sum of consecutive naturals, for example, 270452 + ... + 275031.

It is an arithmetic number, because the mean of its divisors is an integer number (141143985).

Almost surely, 2^1249156070 is an apocalyptic number.

1249156070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249156070 is a deficient number, since it is larger than the sum of its proper divisors (1009147690).

1249156070 is a wasteful number, since it uses less digits than its factorization.

1249156070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545719.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1249156070 is about 35343.4020716739. The cubic root of 1249156070 is about 1076.9748648290.

The spelling of 1249156070 in words is "one billion, two hundred forty-nine million, one hundred fifty-six thousand, seventy".