1492221951 has 24 divisors (see below), whose sum is σ = 2414936784. Its totient is φ = 879932160.

The previous prime is 1492221949. The next prime is 1492221977. The reversal of 1492221951 is 1591222941.

It is not a de Polignac number, because 1492221951 - 2¹ = 1492221949 is a prime.

1492221951 is a modest number, since divided by 21951 gives 14922 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1492221911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200026 + ... + 207351.

It is an arithmetic number, because the mean of its divisors is an integer number (100622366).

Almost surely, 2^1492221951 is an apocalyptic number.

1492221951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1492221951 is a deficient number, since it is larger than the sum of its proper divisors (922714833).

1492221951 is a wasteful number, since it uses less digits than its factorization.

1492221951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407431 (or 407428 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1492221951 is about 38629.2887716044. The cubic root of 1492221951 is about 1142.7322253295.

The spelling of 1492221951 in words is "one billion, four hundred ninety-two million, two hundred twenty-one thousand, nine hundred fifty-one".