1656494967 has 12 divisors (see below), whose sum is σ = 2233787240. Its totient is φ = 1091906112.

The previous prime is 1656494953. The next prime is 1656494999. The reversal of 1656494967 is 7694946561.

It is not a de Polignac number, because 1656494967 - 2¹¹ = 1656492919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656494947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11092 + ... + 58617.

Almost surely, 2^1656494967 is an apocalyptic number.

1656494967 is a deficient number, since it is larger than the sum of its proper divisors (577292273).

1656494967 is an frugal number, since it uses more digits than its factorization.

1656494967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69890 (or 69801 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The square root of 1656494967 is about 40700.0610196103. The cubic root of 1656494967 is about 1183.2142013154.

The spelling of 1656494967 in words is "one billion, six hundred fifty-six million, four hundred ninety-four thousand, nine hundred sixty-seven".