1494894690 has 112 divisors (see below), whose sum is σ = 4121152128. Its totient is φ = 390067488.

The previous prime is 1494894671. The next prime is 1494894691. The reversal of 1494894690 is 964984941.

It is a happy number.

1494894690 is a `hidden beast` number, since 1 + 494 + 8 + 94 + 69 + 0 = 666.

It is a super-2 number, since 2×1494894690² = 4469420268380392200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1494894691) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 340449 + ... + 344811.

Almost surely, 2^1494894690 is an apocalyptic number.

1494894690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1494894690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2060576064).

1494894690 is an abundant number, since it is smaller than the sum of its proper divisors (2626257438).

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

1494894690 is an equidigital number, since it uses as much as digits as its factorization.

1494894690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435 (or 4420 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The square root of 1494894690 is about 38663.8680165345. The cubic root of 1494894690 is about 1143.4140728048.

The spelling of 1494894690 in words is "one billion, four hundred ninety-four million, eight hundred ninety-four thousand, six hundred ninety".