1601262290 has 16 divisors (see below), whose sum is σ = 2922868800. Its totient is φ = 631483440.

The previous prime is 1601262253. The next prime is 1601262329. The reversal of 1601262290 is 922621061.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1126940 + ... + 1128359.

It is an arithmetic number, because the mean of its divisors is an integer number (182679300).

Almost surely, 2^1601262290 is an apocalyptic number.

1601262290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1601262290 is a deficient number, since it is larger than the sum of its proper divisors (1321606510).

1601262290 is a wasteful number, since it uses less digits than its factorization.

1601262290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255377.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1601262290 is about 40015.7755141644. The cubic root of 1601262290 is about 1169.9145942967.

The spelling of 1601262290 in words is "one billion, six hundred one million, two hundred sixty-two thousand, two hundred ninety".