1294650138 has 32 divisors (see below), whose sum is σ = 2625509376. Its totient is φ = 425552688.

The previous prime is 1294650131. The next prime is 1294650163. The reversal of 1294650138 is 8310564921.

It is a super-2 number, since 2×1294650138² = 3352237959646838088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1294650096 and 1294650105.

It is not an unprimeable number, because it can be changed into a prime (1294650131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138645 + ... + 147687.

It is an arithmetic number, because the mean of its divisors is an integer number (82047168).

Almost surely, 2^1294650138 is an apocalyptic number.

1294650138 is an abundant number, since it is smaller than the sum of its proper divisors (1330859238).

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

1294650138 is a wasteful number, since it uses less digits than its factorization.

1294650138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9378.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 1294650138 is about 35981.2470323084. The cubic root of 1294650138 is about 1089.8936961110.

The spelling of 1294650138 in words is "one billion, two hundred ninety-four million, six hundred fifty thousand, one hundred thirty-eight".