1293849690 has 32 divisors (see below), whose sum is σ = 3548845440. Its totient is φ = 295737024.

The previous prime is 1293849673. The next prime is 1293849709. The reversal of 1293849690 is 969483921.

1293849690 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1293849690² = 3348094040626192200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3080385 + ... + 3080804.

It is an arithmetic number, because the mean of its divisors is an integer number (110901420).

Almost surely, 2^1293849690 is an apocalyptic number.

1293849690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1293849690 is an abundant number, since it is smaller than the sum of its proper divisors (2254995750).

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

1293849690 is a wasteful number, since it uses less digits than its factorization.

1293849690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161206.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 1293849690 is about 35970.1221849468. The cubic root of 1293849690 is about 1089.6690323042.

The spelling of 1293849690 in words is "one billion, two hundred ninety-three million, eight hundred forty-nine thousand, six hundred ninety".