1268403190 has 8 divisors (see below), whose sum is σ = 2283125760. Its totient is φ = 507361272.

The previous prime is 1268403187. The next prime is 1268403193. The reversal of 1268403190 is 913048621.

It is an interprime number because it is at equal distance from previous prime (1268403187) and next prime (1268403193).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1268403190² = 3217693304804352200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268403193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63420150 + ... + 63420169.

It is an arithmetic number, because the mean of its divisors is an integer number (285390720).

Almost surely, 2^1268403190 is an apocalyptic number.

1268403190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1268403190 is a deficient number, since it is larger than the sum of its proper divisors (1014722570).

1268403190 is a wasteful number, since it uses less digits than its factorization.

1268403190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126840326.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1268403190 is about 35614.6485311873. The cubic root of 1268403190 is about 1082.4780745363.

The spelling of 1268403190 in words is "one billion, two hundred sixty-eight million, four hundred three thousand, one hundred ninety".