1249164946 has 4 divisors (see below), whose sum is σ = 1873747422. Its totient is φ = 624582472.

The previous prime is 1249164911. The next prime is 1249164979. The reversal of 1249164946 is 6494619421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6494619421 = 379 ⋅17136199.

It can be written as a sum of positive squares in only one way, i.e., 645922225 + 603242721 = 25415^2 + 24561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1249164896 and 1249164905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312291235 + ... + 312291238.

Almost surely, 2^1249164946 is an apocalyptic number.

1249164946 is a deficient number, since it is larger than the sum of its proper divisors (624582476).

1249164946 is an equidigital number, since it uses as much as digits as its factorization.

1249164946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624582475.

The product of its digits is 373248, while the sum is 46.

The square root of 1249164946 is about 35343.5276394420. The cubic root of 1249164946 is about 1076.9774156729.

The spelling of 1249164946 in words is "one billion, two hundred forty-nine million, one hundred sixty-four thousand, nine hundred forty-six".