1491467402 has 4 divisors (see below), whose sum is σ = 2237201106. Its totient is φ = 745733700.

The previous prime is 1491467401. The next prime is 1491467437. The reversal of 1491467402 is 2047641941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2047641941 = 4139 ⋅494719.

It can be written as a sum of positive squares in only one way, i.e., 1349166361 + 142301041 = 36731^2 + 11929^2 .

It is a super-2 number, since 2×1491467402² = 4448950022457259208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1491467401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372866849 + ... + 372866852.

Almost surely, 2^1491467402 is an apocalyptic number.

1491467402 is a deficient number, since it is larger than the sum of its proper divisors (745733704).

1491467402 is an equidigital number, since it uses as much as digits as its factorization.

1491467402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745733703.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1491467402 is about 38619.5209965116. The cubic root of 1491467402 is about 1142.5395835599.

The spelling of 1491467402 in words is "one billion, four hundred ninety-one million, four hundred sixty-seven thousand, four hundred two".