1430745981 has 16 divisors (see below), whose sum is σ = 2274975744. Its totient is φ = 782022384.

The previous prime is 1430745977. The next prime is 1430745991. The reversal of 1430745981 is 1895470341.

It is a happy number.

It is not a de Polignac number, because 1430745981 - 2² = 1430745977 is a prime.

It is a super-2 number, since 2×1430745981² = 4094068124295304722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430745931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1480621 + ... + 1481586.

It is an arithmetic number, because the mean of its divisors is an integer number (142185984).

Almost surely, 2^1430745981 is an apocalyptic number.

It is an amenable number.

1430745981 is a deficient number, since it is larger than the sum of its proper divisors (844229763).

1430745981 is a wasteful number, since it uses less digits than its factorization.

1430745981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2962240.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1430745981 is about 37825.2029868975. The cubic root of 1430745981 is about 1126.8190439173.

The spelling of 1430745981 in words is "one billion, four hundred thirty million, seven hundred forty-five thousand, nine hundred eighty-one".